Plants-Basel
·
2023
·Vol. 12
·期 6
·1414
·
IF 4.5
Xiaoyun Huang,Chengwu Fan,Dongyi Xie,Hongxing Chen,Song Zhang,Hui Chen,Song Qin,Tianling Fu,Tengbing He,Zhenran Gao
To study the synergistic effects of water management and silicon (Si) foliar spraying on the uptake and transport of cadmium (Cd) in rice, we designed four treatments: conventional intermittent flooding + no Si foliar spraying (CK), continuous flooding throughout the growth stage + no Si foliar spraying (W), conventional intermittent flooding + Si foliar spraying (Si) and continuous flooding throughout the growth stage + Si foliar spraying (WSi). The results show that WSi treatment reduced the uptake and translocation of Cd by rice and significantly reduced the brown rice Cd content, with no effect on rice yield. Compared with CK, the Si treatment increased the net photosynthetic rate (Pn), stomatal conductance (Gs) and transpiration rate (Tr) of rice by 6.5–9.4%, 10.0–16.6% and 2.1–16.8%, respectively. The W treatment decreased these parameters by 20.5–27.9%, 8.6–26.8% and 13.3–23.3%, respectively, and the WSi treatment decreased them by 13.1–21.2%, 3.7–22.3% and 2.2–13.7%, respectively. The superoxide dismutase (SOD) and peroxidase (POD) activity decreased by 6.7–20.6% and 6.5–9.5%, respectively, following the W treatment. Following the Si treatment, SOD and POD activity increased by 10.2–41.1% and 9.3–25.1%, respectively, and following the WSi treatment, they increased by 6.5–18.1% and 2.6–22.4%, respectively. Si foliar spraying ameliorated the detrimental effects of continuous flooding throughout the growth stage on photosynthesis and antioxidant enzyme activity. We conclude that synergistic continuous flooding throughout the growth stage, combined with Si foliar spraying, can significantly block Cd uptake and translocation and is therefore an effective means of reducing the accumulation of Cd in brown rice.Keywords:water management;foliar spraying;Si;cadmium;photosynthesis
研究领域:
植物学
·
环境科学
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DOI
PubMed
高影响因子
Crop & Pasture Science
·
2019
·Vol. 70
·期 4
·359-366
·
IF 1.33
Xiaoli Tan,Xin Yang,Yinan Xie,Han Xiao,Mengjiao Liu,Lianghuan Wu
We studied the relative efficacy of different forms of foliar iron (Fe) fertilisation on leaf re-greening in Fe-deficient, purple-fleshed sweet potato (Ipomoea batatas (L.) Lam.) varieties xuzi8 and xuzi6. Activities of ferric chelate reductase (FCR) and concentrations of Fe were measured in the leaves and roots at intervals over 5 days to quantify recovery from leaf chlorosis. Freshly expanded and chlorotic leaves were immersed in one of three different fertiliser compounds containing 9 mm Fe: FeSO4, Fe2(SO4)3, Fe(III)-EDTA. An Fe-sufficient treatment and an Fe-deficient control were included. The experiment had a completely randomised block design with five replications per treatment and was conducted in a sunlit glasshouse. For variety xuzi8, leaf FCR activity in the Fe2(SO4)3 treatment was highest at 1 h after application, and higher than all other treatments, whereas FeSO4 and Fe(III)-EDTA treatments showed their highest FCR at day 5 after application, both significantly higher than the Fe2(SO4)3 and control treatments. Furthermore, leaf Fe concentration reached a maximum in the FeSO4 treatment at day 1, and in the Fe2(SO4)3 treatment at day 3. By contrast, root Fe concentration was relatively constant and lower in the foliar Fe treatments than the Fe-sufficient and -deficient treatments. For variety xuzi6, leaf SPAD was higher with the Fe2(SO4)3 than the FeSO4 treatment at day 5 after application. In general, FCR activity and Fe concentrations in roots and leaves of xuzi6 were higher than those of xuzi8. Variations in leaf Fe concentrations were similar for both the FeSO4 and Fe2(SO4)3 treatments of the two varieties. Maximum leaf Fe levels in xuzi6 were ~4-fold those in xuzi8. The results of the study suggest that foliar-applied Fe2(SO4)3 was the most effective compound at correcting Fe-deficiency symptoms. The higher leaf and root FCR activity and Fe concentration in xuzi6 might explain its higher tolerance to Fe deficiency and better re-greening than xuzi8.
研究领域:
植物学
·
营养学
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DOI
高影响因子
Journal of Soil Science and Plant Nutrition
·
2024
·Vol. 24
·期 1
·1301-1317
·
IF 3.4
Mai Yiming,Ren Yong,Deng Siying,Ashraf Umair,Tang Xiangru,Duan Meiyang,Mo Zhaowen
Foliar application of ZnO Nanoparticles (ZnO-NPs) could reduce adverse effects of multiple abiotic stresses in crop plants. The present study was conducted to induce the low temperature stress tolerance in growing rice plants by the foliar application of ZnO-NPs. Two fragrant rice cultivars i.e., Meixiangzhan2 and Xiangyaxiangzhan were grown under normal temperature (NT, day/night: 28℃/25℃) and low temperature (LT, day/night: 15℃/12℃) after foliar application of Zn and ZnO-NPs with following treatments viz . , application of distilled water only (CK), ZnSO 4 ·7H 2 O at 6.6 mg·L −1 (CK1), and application of ZnO-NPs at 25, 50, 100, and 200 mg·L −1 regarded as N25, N50, N100, and N200, respectively. The growth and physiological attributes were examined to assess the potential of ZnO-NPs to induce low temperature stress tolerance in growing rice plants. The ZnO-NPs, and temperature × ZnO-NPs had a significant effect on the growth and physiological attributes ( p < 0.05) of rice seedlings. The ZnO-NPs application enhanced the root dry weight, root-shoot ratio, total dry weight, and chlorophyll a/b ratio in Xiangyaxiangzhan by 10.48%-18.10%, 1.96%-20.31%, 3.25%-6.02%, and 3.70%-6.11% at low temperature, respectively. The activity of antioxidant enzymes in Meixiangzhan 2 was increased, whilst the malondialdehyde (MDA) content in root was significantly declined. Moreover, lower levels of ZnO-NPs treatment regulated the activity of N-metabolizing enzymes i.e., nitrate reductase (NR), glutamate synthase (GS), glutamine oxoglutarate aminotransferase (GOGAT) and in seedlings under low temperature. Regarding correlation analysis, the N100 and N200 treatment exhibited a stronger correlation with growth-related attributes, compared to other treatments. Foliar application of ZnO-NPs at appropriate concentration (100 mg·L −1 ) could alleviate the inhibitory effect of low temperature stress on the early growth of fragrant rice.
研究领域:
植物科学
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纳米技术
·
农业逆境管理
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DOI
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2021
·Vol. 102
·期 9
·3590-3598
·
IF 3.639
Meng Xu,Mengjiao Liu,Linlin Si,Qingxu Ma,Tao Sun,Jun Wang,Kaijun Chen,Xiangjie Wang,Lianghuan Wu
BACKGROUND Foliar application of highly concentrated ZnSO 4 fertilizer improves Zn biofortification in wheat grains. However, excess ZnSO 4 ·7H 2 O concentration (≥5 g kg −1 , w v −1 ) has been associated with leaf burn and yield loss, necessitating Zn sources with a high threshold concentration. The aim of this study, based on a 2 year field experiment conducted on wheat cultivated in acidic and alkaline soil, was to identify a suitable Zn formulation with a high Zn concentration or efficient adjuvant to achieve optimal Zn biofortification levels without compromising agronomic performance. RESULTS There was a continued increase in the Zn concentration in wheat grains and a decrease in grain yield with an increase in the concentration of the Zn foliar sprays in both soil types examined. Wheats treated with chelated Zn foliar sprays – Zn glycine chelate (ZnGly) and Zn-ethylenediaminetetraacetic acid (ZnEDTA) – had less foliar injury than those treated with unchelated Zn fertilizers. Furthermore, irrespective of wheat cultivars and soil types, ZnEDTA applied to wheat at a concentration of 10 g kg −1 achieved the highest grain Zn concentration without negatively affecting the wheat performance. Adjuvant type and concentration caused no significant variation in grain Zn concentration. CONCLUSION Overall, without foliar burn, wheat treated with 10 g kg −1 ZnEDTA foliar spray had the best performance with regard to grain Zn concentration and grain yield, which could have considerable implications for Zn biofortification of wheat grain. © 2021 Society of Chemical Industry.
研究领域:
农业
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植物科学
·
营养科学
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DOI
PubMed
高影响因子
Environmental Technology & Innovation
·
2024
·
IF 6.7
Yan Li,Hongyu Sun,Zewei Liu,Yutan Chu,Yizong Huang,Qiongli Bao
The remediation of soil contaminated with cadmium (Cd) and arsenic (As) has consistently been a complex issue. Foliar application of jasmonic acid (JA) could be a promising agronomic practice for reducing heavy metal accumulations. However, the combined reduction effects and mechanisms of Cd and As in rice through foliar JA application have not been fully explored. In this study, a pot experiment was conducted to investigate rice yield, Cd and As accumulations and translocations, photosynthesis, and ROS-scavenging attributes in Huanghuazhan (HHZ) and Huarun No.2 (HR). The results revealed that 1 μM JA treatment significantly decreased the concentrations of Cd (by 34.6% in HHZ and 38.3% in HR) and As (by 30.8% in HHZ and 40.8% in HR) in the grains, and increased the percentage of filled-grain and 1000-grain weight in HHZ. The structural equation model (SEM) indicated that grain Cd was directly and positively affected by panicle Cd and leaf sheath Cd, while grain As was directly and positively affected by panicle As, leaf blade As and leaf sheath As. JA application enhanced the net photosynthetic rate and chlorophyll content (both a and b). Additionally, it scavenged levels of H 2 O 2 and O 2 .- , reduced lipid peroxidation damage by promoting the activities of antioxidant enzymes and altering the cellular redox status in the flag leaves of rice. Overall, these results suggest that foliar JA application of could be an effective strategy for preventing Cd and As accumulations in rice grains in paddy soils with low to medium contamination risks.
研究领域:
农学
·
植物生理学
·
环境科学
·
土壤学
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产品关联
DOI
高影响因子
SCIENTIA HORTICULTURAE
·
2021
·
IF 3.463
Weiwei Zhou,Wenlong Zheng,Haofeng Lv,Qunyan Wang,Bin Liang,Junliang Li
The application of natural biostimulants is proposed as an interesting approach to ensure sustainable yields and product quality in agricultural and horticultural crops. Here, the effects of foliar application of a protein hydrolysate derived from pig blood (Ppb) on biomass production, phenolic biosynthesis, and the correlation between phenolic profiles and antioxidant activities in lettuce were investigated. The Ppb application significantly enhanced the phenolic content and antioxidant properties in two genotypes of hydroponically cultivated lettuce by increasing the gene expression of enzymes (PAL, CHS, F3H, DFR, F35H, and UFGT) involved in phenolic biosynthesis. However, these changes occurred in a genotype-dependent manner. The results of HPLC and correlation analyses implied that the most contributory phenolic compositions to the increased antioxidant activities in Ppb-treated lettuce were flavonoids and anthocyanins. Meanwhile, no changes were observed in shoot and root fresh weights following Ppb application. These results clearly suggest that Ppb application is a useful strategy to improve antioxidant activities of lettuce by enhancing the biosynthesis of unique phenolic compounds without reducing plant yield.
研究领域:
农业
·
园艺
·
植物生理学
·
分子生物学
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DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Jingyuan Wang,Rong Li,Zongyuan Zhao,Meiqing Zhu,Yi Wang
Prothioconazole (PTC) has been widely utilized for plant fungal disease control, but its metabolite prothioconazole-desthio (PTC-d) exhibits reproductive toxicity. In the present study, carbon quantum dot (CQD)-modified fluorescent double-hollow shelled mesoporous silica nanoparticles (FL-MSNs) loaded with PTC, referred to as PTC@FL-MSNs, were constructed with an average size of 369 nm and a loading capacity of 28.1 wt %, which could increase the antifungal efficiency of PTC. In addition, upright fluorescence microscope and UPLC-MS/MS studies showed that PTC@FL-MSNs could be effectively transported via root uptake and foliar spray in soybean plants. Compared to a 30% PTC dispersible oil suspension agent, the PTC@FL-MSN treatment group showed higher concentrations (leaves: 0.50 > 0.48 mg/kg), longer half-lives for degradation (leaves: 3.62 > 3.21 d; roots: 3.39 > 2.82 d), and fewer metabolites. These findings suggest that sustained pesticide release and toxicity reduction are potential applications for PTC nanofungicide delivery technology.
研究领域:
农学
·
纳米技术
·
植物病理学
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环境科学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL POLLUTION
·
2022
·
IF 9.988
Yan Li,Shengnan Zhang,Qiongli Bao,Yutan Chu,Hongyu Sun,Yizong Huang
Cadmium (Cd) is a potentially hazardous element with substantial biological toxicity, adversely affecting plant growth and physiological metabolism. Therefore, it is necessary to explore practical and environment-friendly approaches to reduce toxicity. Jasmonic acid (JA) is an endogenous growth regulator which helps plants defend against biological and abiotic stresses. To determine how JA help relieve Cd toxicity in rice, both laboratory and field experiments were implemented. In the seedling stage, the role of JA in mediating rice Cd tolerance was investigated via a fluorescent probe in vivo localization, Fourier Transform Infrared Spectroscopy (FTIR), and colorimetry . At the mature growth stage of rice, field experiments were implemented to research the effects of JA on the Cd uptake and translocation in rice. In the seedling stage of rice, we found that JA application increased the cell wall compartmentalization of Cd by promoting the Cd combination on chelated-soluble pectin of rice roots and inhibited Cd movement into protoplasts , thereby reducing the Cd content in the roots by 30.5% and in the shoots by 53.3%, respectively. Application of JA reduced H 2 O 2 content and helped relieve Cd-induced peroxidation damage of membrane lipid by increasing the level of catalase (CAT), peroxidase (POD), ascorbate peroxidase (APX), and glutathione (GSH), but had no significant effect on the superoxide dismutase (SOD) activity. Additionally, field experiments showed that foliar spraying of JA inhibited rice Cd transport from the stalk and root to the grain and reduced Cd concentration in grain by 29.7% in the high-Cd fields and 28.0% in the low-Cd fields. These results improve our understanding of how JA contributes to resistance against Cd toxicity in rice plants and reduces the accumulation of Cd in rice kernels.
研究领域:
植物生理学
·
环境科学
·
农业
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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