Forests
·
2023
·Vol. 14
·期 4
·783
·
IF 2.9
Lulu Gao,Aoying Zhang,Shanchun Yan
Heavy metals are serious pollutants that affect the growth and disease resistance of woody plants. Herein, the enrichment characteristics of an essential element (Zn) inPopulus simoniiseedlings, as well as the effects of Zn stress on seedling growth and resistance to leaf rust, were investigated. Zn contents in roots, stems, and leaves of treatment groups were significantly increased. Zn stress at all concentrations significantly inhibited the biomass of seedlings. Under the low, middle, and high Zn treatments, compared with the control group, CAT activity significantly decreased by 36%, 21%, and 14%; SOD activity significantly decreased by 13%, 8%, and 5%; PPO activity significantly decreased by 27%, 31%, and 47%; TI activity significantly decreased by 48%, 55%, and 61%, and CI activity significantly decreased by 10%, 20%, and 14%, respectively. In the natural environment, we accidentally discovered thatP. simoniiwas infected with leaf rust, and Zn stress significantly increased the rust disease index. The disease index correlated positively with Zn content in leaves and negatively with the chemical defense indexes. Taken together, Zn stress causes a strong growth toxicity inP. simoniiseedlings, and the reduced chemical defense under Zn stress increases the susceptibility of seedlings to leaf rust.Keywords:essential element;Populus simonii;growth;chemical defense;leaf rust
研究领域:
环境科学
·
植物病理学
·
毒理学
✓ 已验证
产品关联
DOI
高影响因子
PLANT SCIENCE
·
2015
·
IF 3.607
Chao Huang,Qing-Bo Yu,Xin-Bo Yuan,Zi-Ran Li,Jing Wang,Lin-Shan Ye,Ling Xu,Zhong-Nan Yang
The fructokinase-like protein2 (FLN2) is a component of the PEP complex. FLN2 knockout mutants displayed a delayed greening phenotype on sucrose-containing medium. Our previous work indicated that partial PEP activity is essential for its greening phenotype. In this study, we further report that sufficient Rubisco accumulation is critical for fln2-4 greening. Sugar serves many important functions, such as an energy source and signaling molecule. Through pharmacological experiments using a sugar analog and sugar signaling inhibitor, we demonstrate that sugar serves as energy to support the fln2-4 greening. Seed-reserve and photosynthetic CO 2 -fixation are the primary energy sources for early seedling growth . No obvious differences were observed in the seed-reserve of the wild-type and fln2-4 by comparing their seed size and dark-germination, indicating that the defective carbon fixation may account for the energy deficit in fln2-4 during its early seedling growth. The Rubisco content was low in fln2-4 , but it rapidly accumulated during the greening of fln2-4 . Expression of a nuclear-encoded rbcL gene facilitates Rubisco accumulation and partially complements the mutant defects. These results suggest that the Rubisco accumulation is critical for fln2-4 greening. In summary, the rapid Rubisco accumulation that depends on sufficient PEP activity is important for normal seedling growth.
研究领域:
植物学
·
分子生物学
✓ 已验证
DOI
高影响因子
ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
·
2020
·
IF 1.22
Shu Wang,Mei Wei,Bingde Wu,Huiyuan Cheng,Kun Jiang,Congyan Wang
Large amounts of nitrogen (N) enter ecosystems via N deposition. The increased drought stress has incurred serious threats to plant seed germination and seedling growth (SGe-SGr). It is significant to characterize the combined impacts of N deposition and drought stress on SGe-SGr of plants to enable a further explanation of the response mechanism of SGe-SGr to N deposition and drought stress. This study aims to explore the combined impacts of N deposition with a concentration gradient and drought stress (mimicked using PEG 6000) with different levels on SGe-SGr of wheat. N treatment raises seedling growth of wheat mainly due to the increased levels of available N and the decreased level of peroxidation of the cell cytoplasm membrane of wheat. Drought stress declines SGe-SGr of wheat mostly due to the progressively enlarged osmotic pressure triggered by water deficit and the advanced level of peroxidation of the cell cytoplasm membrane of wheat. N treatment regardless of the concentration dramatically mitigates the adverse impacts of drought stress on seedling growth of wheat. This may be owed to the improved competitive ability for sunlight acquisition and leaf photosynthetic area via the deactivation of nutrition limits (wheat can absorb more N nutrients and improve its drought resistance ability) implemented by N addition. This may also due to the down-regulated level of peroxidation of the cell cytoplasm membrane of wheat under the combined N and drought stress. However, the combined treatments of the high level of N supply and light drought stress decline seed germination of wheat. This may be due to the promoted osmotic pressure contributed by the high level of N supply under water deficit. Thus, N deposition mitigates the adverse impacts of drought stress on seedling growth of wheat but aggravates the adverse impacts of drought stress on seed germination of wheat mostly.
研究领域:
植物学
·
生态学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Qianjie Niu,Jiwei Jiang,Changsong Zhan,Yujie Tao,Zijun Ye,Jian Huang,Bin Dong,Zhenhui Kang
With the world's population expanding rapidly, modern agriculture is evolving at a swift pace, leading to a significant increase in food production, primarily through the use of chemical fertilizers. However, this heavy reliance on fertilizers has led to issues such as soil compaction and decrease of earthworm abundance. Herein this study reports a smart soil consisting of conventional soil and carbon dots (CDot) based smart material which is capable of automatically adjusting its porosity and soil aggregate size. Due to the responsiveness, The CDot-based smart soil can lift its height up to 150% upon humidity stimulation due to the increased porosity which is similar to the effect caused by earthworms. Based on this effect, this smart soil can increase the growth rate of maize seedlings by 40%, thus showing great potentials in agriculture.
研究领域:
农业科学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
AGRONOMY JOURNAL
·
2019
·Vol. 111
·期 5
·2341-2349
·
IF 1.805
Jing Li,Yin Min Htwe,Yong Wang,Yaodong Yang,Yi Wu,Dongxia Li,Abdul Kareem,Rencai Wang
Haustorium absorbs energy from the endosperms (liquid and solid) and plays a key role in nutrient mobilization during coconut germination and seedling growth. This study was conducted to shed light on possible interactions between haustorium and endosperms during this process. Germination rates and morphological changes of coconut cultivars Hainan Tall (HT) and Red Dwarf (RD), as well as the profiles of sugars and fatty acids in endosperms and haustorium were also analyzed. Results showed that liquid and solid endosperm inside the coconut exhausts successively, while haustorium occupies the nut gradually. Haustorium had significant positive correlation with seedling, while it had significant negative correlation with liquid and solid endosperms. Sugars in liquid endosperm continuously decreased, whereas in solid endosperm and haustorium accumulated at early stages and decreased later along with the aggressive seedling growth. Fatty acids in solid endosperm shared a very similar trend with sugars. In conclusion, haustorium development and seedling growth mainly depend on the nutrients stored in the liquid endosperm at early stages and then depend on the solid endosperm, in which fatty acids degrade rapidly to sugar so as to provide enough energy. These findings could be applicable in coconut germination and seedling propagation. Core Ideas Relative cool season (25–29°C) is more suitable for coconut germination and local variety (HT) is more adaptable. Development mainly depends on stored nutrients in liquid endosperm at early stages and then on solid endosperm. Fatty acids in solid endosperm degrade rapidly to sugars since liquid endosperm almost exhausted. Conversion of fatty acids to sugars helps provide enough energy for rapidly growing haustorium and seedling.
研究领域:
植物生理学
·
植物营养学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2024
·
IF 7.6
Xiuyan Wang,Tianxiao Li,Xin Hu,Yuxuan Zhang,Dunhan Zhang,Hanshuo Zhang,Hongxia Xu,Yuanyuan Sun,Xueyuan Gu,Jun Luo,Bin Gao
Although selenium is an essential nutrient, its contamination in water poses serious risks to human health and ecosystems. In this study, aluminum-modified bamboo biochar (Al-BC) was developed to reclaim Se(VI) from water. Compared to pristine biochar (BC), Al-BC had a larger specific surface area (176 m 2 /g) and pore volume (0.180 cm³/g). The modification, achieved by loading AlOOH and Al 2 O 3 particles onto the surface, enabled Al-BC to achieve a maximum adsorption capacity of 37.6 mg/g for Se(VI) within 2 h and remove 99.6% of Se(VI) across a pH range of 3–10. The main adsorption mechanism of Se(VI) involved electrostatic attraction, forming outer-sphere complexes between Se(VI) and AlOOH sites on the biochar. The bioavailability of Se sorbed on the spent biochar (Al-BC-Se) was thus evaluated. It was discovered that Al-BC-Se successfully released Se(VI), which impacted the growth of wheat seedlings. The Se content reached 134 μg/g dry weight (DW) in wheat shoots and 638 μg/g DW in roots, significantly exceeding normal selenium content (<40 μg/g DW). By successfully applying the modified biochar to capture selenium from water through adsorption and then reusing it as an essential nutrient in soil, this study suggests the promising feasibility of the "removal-collection-reuse" approach for the circular economy of selenium in wastewater.
研究领域:
环境科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PEST MANAGEMENT SCIENCE
·
2020
·Vol. 76
·期 11
·3792-3799
·
IF 3.75
Xiujun Tang,Fengjiao Hao,Huizhu Yuan,Xiaojing Yan,Daibin Yang,Alan G Taylor
BACKGROUND A systemic seed treatment can be taken up into shoot tissues during early corn seedling growth. However, the pathway that a systemic compound is taken up, either from seed or root uptake to shoot tissues is not fully understood. To study the single contributions of seed pathway and root pathway for the uptake and translocation of imidacloprid seed treatment, two methods were developed: A seed treatment method and a growing media/hydroponic solution delivery method. The seed treatment method employed a live and dead seed separated with plastic wrap to provide a barrier. The growing media/hydroponic solution delivery method quantified the capacity for uptake by seeds and roots. RESULTS The seed pathway transported 1.9–2.5 times more imidacloprid into shoot tissues when compared to the root pathway at the same dosage rate. The higher amount of imidacloprid taken up and translocated by the seed pathway was attributed to the fact that the corn seeds were in direct contact with high provided concentrations of imidacloprid. However, the root pathway showed 7.9–9.5 times higher capacity for transporting imidacloprid into shoot tissues when compared with the seed pathway. Whenever imidacloprid was taken up by seed or root, amounts of imidacloprid were measured in both tissues of seed and root. CONCLUSION The seed pathway transported more imidacloprid than the root pathway during early seedling growth since corn seeds were contacted by higher concentrations of imidacloprid. Both seed pathway and root pathway were occurring concurrently during early seedling growth of corn. © 2020 Society of Chemical Industry
研究领域:
植物生理学
·
农药科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Agronomy-Basel
·
2025
·Vol. 15
·期 2
·270
·
IF 3.4
Yu Zhang,Li Jia,Han Wang,Haikun Jiang,Qiangqiang Ding,Dekun Yang,Congsheng Yan,Xiaomin Lu
There is little study on melatonin’s ability to prevent salt damage in eggplants, despite the fact that it is a strong antioxidant in plants that has been found to help mitigate a variety of adverse challenges. In this study, we used “Anhui Eggplant No.8” as the test material and simulated salt stress by irrigating the roots with 150 mmol·L NaCl solution. Subsequently, we treated the eggplants with different concentrations of exogenous melatonin (0, 50, 100, 150, 200, 250 μmol·L) and assessed the plant traits and an array of physiological and biochemical indices following melatonin application to observe the impact of salt stress. Our study results indicate that exogenous melatonin at a concentration of 200 μmol·L can significantly alleviate the inhibition of eggplant photosynthesis under salt stress by increasing the content of chlorophyll in leaves and the activity of antioxidant enzymes. This leads to a notable increase in the levels of non-enzyme antioxidants and osmotic regulatory substances. As a result, the antioxidant capacity of the eggplants is enhanced, the degree of membrane lipid peroxidation is reduced, and the growth of eggplant seedlings under salt stress is effectively promoted, thereby strengthening the salt tolerance of eggplant seedlings. Fluorescence quantitative data analysis indicates thatSmCAT4is indeed a gene that positively regulates salt stress. However, in theSmPPOfamily, we did not find any genes that respond to salt stress. This research provides a theoretical foundation for improving the yield productivity and quality of eggplants under protected farming by clarifying the physiological mechanism by which melatonin controls the salt tolerance of eggplant seedlings.
研究领域:
植物生理学
·
农业科学
✓ 已验证
产品关联
DOI
高影响因子
iScience
·
2025
·
IF 4.1
Ke Wang,Nana Zhong,Manli Yang,Wen Tian,Yaohuan Zhu,Changjiang Huang,Lin Zhao,Xun Liu,Jun Tang,Yuqing Miao,Yuntong Liu,Yu Lei,Chuansheng Wu
Bisphenol A (BPA) is widely acknowledged as an endocrine disruptor, and its toxicological effects have garnered considerable research interest. In this investigation, a soil pot experiment was conducted to examine the consequences of sustained BPA exposure on the growth of soybean seedlings, the transcriptome, and the endophytic bacterial community. We observed a substantial inhibition in soybean seedling growth. Transcriptome analysis showed that growth-related genes in both leaves and roots were markedly downregulated following BPA treatment. Intriguingly, BPA considerably increased the abundance and diversity of endophytic bacteria in leaves while suppressing beta diversity in roots. A significant association was identified between amplicon sequence variants and differentially expressed genes under BPA treatment in the leaves and roots. These findings illuminate the effects of continuous exposure to BPA on the transcriptome and endophyte of soybean seedlings, which may collectively impair soybean seedling growth, offering valuable insights into BPA toxicity in plants.
研究领域:
植物学
·
环境毒理学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Plant Science
·
2024
·
IF 4.1
Yu Bo,Xue Xiaomin,Nie Peixian,Lu Ninglin,Wang Laiping
Previous studies have determined that fulvic acid (FA) prevents plants from suffering from abiotic stress. However, little is known about the mechanisms for using FA to increase apple trees resistance to Cd toxicity. In order to clarify the mechanism underlying FA alleviation in Cd-induced growth inhibition in apple seedlings. Herein, we treated M9T337 seedlings to either 0 or 30 μM/L Cd together with 0 or 0.2 g/L FA and analyzed the root growth, antioxidant enzyme activities, carbon (C) assimilation, nitrogen (N) metabolism, and C and N transport. The results presented that, compared with CK (without Cd addition or FA spraying application), Cd poisoning significantly inhibited the root growth of apple seedlings. However, this Cd-induced root growth inhibition was significantly alleviated by FA spraying relative to the Cd treatment (Cd addition alone). On the one hand, the mitigation of inhibition effects was due to the reduced oxidative damage by enhancing antioxdiant enzyme (SOD, POD, and CAT) activities in leaves and roots.On the other hand, this growth advantage demonstrated compared to the Cd treatment was found to be associated with the strengthen of photosynthetic performance and the elevation of C and N metabolism enzymes activities. Meanwhile, we also found that under Cd stress condition, the distribution of C and N nutrients in apple seedlings was optimised by FA spraying application relative to the Cd treatment, according to the results of 13 C and 15 N tracing. Conclusively, our results suggested that the inhibitory effect of Cd on apple seedlings root growth was alleviated by FA through regulating antioxdiant capacities and C and N metabolism.
研究领域:
植物生理学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2021
·
IF 6.291
Xueying Zong,Juanjuan Zhang,Jinwei Zhu,Linyu Zhang,Lijuan Jiang,Ying Yin,Hongyan Guo
Microplastics are widespread in freshwater environments, their biological effects and combined effects of other pollutants have attracted extensive attention. In this study, we investigated the adsorption properties of heavy metals onto polystyrene (PS) microplastics as well as the bioavailability and toxicity of microplastics and heavy metals by hydroponic wheat seedlings experiment. Results showed that PS microplastics (0.5 µm, 100 mg/L) had no significant effect on wheat seedlings growth, photosynthesis, and reactive oxygen species (ROS) content. However, PS microplastics could adsorb copper and cadmium, with a predominantly chemisorption. The accumulation of copper and cadmium in wheat seedlings reduced in the presence of PS microplastics, which meant the toxic effect by heavy metals might be mitigated. Compared with single heavy metals treatments, the combination of PS microplastics and heavy metals increased chlorophyll content, enhanced photosynthesis and reduced the accumulation of ROS. These findings suggest that PS microplastics (0.5 µm, 100 mg/L) have a mitigating effect on the bioavailability and toxicity of copper and cadmium.
研究领域:
环境科学
·
植物生理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2024
·
IF 5.7
Hao Jiang,Haodong Wang,Cancan Qian,Zhenlong Yang,Desong Yang,Jianghu Cui
To promote the growth and yield of crops, it is necessary to develop an effective silicon fertilizer. Herein, a new type of 2 nm silicon quantum dot (SiQD) was developed, and the phenotypic, biochemical, and metabolic responses of rice seedlings treated with SiQDs were investigated. The results indicated that the foliar application of SiQDs could significantly improve the growth of rice seedlings by increasing the uptake of nutrient elements and activating the antioxidative defense system. Furthermore, metabolomics revealed that the supply of SiQDs could significantly up-regulate several antioxidative metabolites (oxalic acid, maleic acid, glycine, lysine, and proline) by reprogramming the nitrogen- and carbon-related biological pathways. The findings provide a new strategy for developing an effective and promising quantum fertilizer in agriculture.
研究领域:
植物学
·
农业科学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）