Foliar application of humic acid decreased hazard of cadmium toxicity on the growth of Hybrid Pennisetum

Song, Xiliang; Man, Chen; Chen, Weifeng; Jiang, Huixin; Yue, Xian

doi:10.1007/s11738-020-03118-9

Cited by 16 publications

(8 citation statements)

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“…(Yasmin khan, et al, 2017) revealed that HA enhanced shoot dry biomass as well as decreased the effect of Cd concentration in (Brassica rapa) plant. Foliar application of HA alleviating the symptoms of cd toxicity by increasing the content of photosynthetic pigments, root, shoot and leaf biomass in Hybrid Pennisetum (Song et al, 2020). HA successfully decreased the harmful effect of Cd stress by increasing total dry weight, number of spike and dry weight of straw.…”

Section: Resultsmentioning

confidence: 95%

“…High tolerance of plants to heavy metals toxicity related to the ability of roots to tolerate Cd entrance as the toxic metal to the roots first, which make the plants to have a potential mechanism to metal tolerance such as cadmium stress (Azevedo et al, 2012). (Venkataramaiah et al 2011) showed that rice plant has several strategies to improve tolerance against heavy metal pollutant especially cadmium.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Humic Acid on Tolerance indexes of Barley plant to Cadmium Toxicity

2021

ZJPAS

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This study was carried out to evaluate the effect of different levels of Humic acid (0, 400, 800 ppm) on tolerance index of barley plant to different levels (0, 25, 50 and 100 ppm) of Cadmium. The experiment was designed according factorial completely randomized design with three replications. The results revealed that the combination effect of Humic acid and Cadmium significantly increased the total dry weight, number of spikes and dry weight of straw, as well as in total dry weight of plant, cadmium tolerance was found by treatments HA0CD50, HA0CD10, HA400CD0, HA400CD25, HA400CD100, HA800CD50, HA800CD100. Cadmium significantly decreased the relative chlorophyll production rate (RCPR) of Barley plant,

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Effect of Humic Acid on Tolerance indexes of Barley plant to Cadmium Toxicity

2021

ZJPAS

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“…Environmental stress is one of the main causes of reduced photosynthetic intensity in plants, and the limitation of photosynthesis will affect the ability of plants to assimilate CO 2 . The accumulation of ROS and reduction of Chl content will ultimately inhibit plants’ photosynthetic efficiency ( Song et al., 2020 ). In our research, PE-MPs and PVC-MPs single or composite contamination significant decreased P n , T r and G s in leaves of soybean but had no noticeable effect on C i , the negative impact caused by PVC treatment was significantly greater than that of the PE+PVC treatment, while the negative effect of the PE+PVC treatment was greater than that of the PE treatment ( Table 1 ).…”

Section: Discussionmentioning

confidence: 99%

“…Due to the fragile characteristic of photosystem II (PSII), the structure and function of PSII are the first to be damaged under the influence of external abiotic stresses ( Shen et al., 2019 ). The massive accumulation of ROS in plant cells affects the photosynthetic redox signaling pathway, which manifests as an imbalance in the number of ions on both sides, while the self-repair mechanism of PSII is inhibited, ultimately leading to the inhibition of plant photosynthesis ( Song et al., 2020 ), Moghadam et al ( 2020 ) suggested that environmental stress affects photosynthesis and enzyme activity in canola. The effect of PVC-MPs on water uptake by plant roots is higher than that of PE-MPs, so the physiological processes in which plants have water participation are hindered ( Kalčíková et al., 2017 ).…”

Section: Discussionmentioning

confidence: 99%

“…PVC can enrich the soil with heavy metal elements or pesticide residues, resulting in PVC-MPs being more biotoxic than PE-MPs, resulting in more severe oxidative damage to soybeans and affecting photosynthesis in soybeans. ( Chen et al., 2020 ; Song et al., 2020 ), becoming the cause of the reduced energy transfer between PSII RCs and the imbalance in the number of electrons on the donor and acceptor sides of PSII.…”

Section: Discussionmentioning

confidence: 99%

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Single and composite damage mechanisms of soil polyethylene/polyvinyl chloride microplastics to the photosynthetic performance of soybean (Glycine max [L.] merr.)

Song

et al. 2023

Front. Plant Sci.

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IntroductionAdverse impacts of soil microplastics (MPs, diameter<5 mm) on vegetative growth and crop production have been widely reported, however, the single and composite damage mechanisms of polyethylene (PE) /polyvinyl chloride (PVC) microplastics (MPs) induced photosynthesis inhibition are still rarely known.MethodsIn this study, two widely distributed MPs, PE and PVC, were added to soils at a dose of 7% (dry soil) to examine the single and composite effects of PE-MPs and PVC-MPs on the photosynthetic performance of soybean.ResultsResults showed PE-MPs, PVC-MPs and the combination of these two contaminants increased malondialdehyde (MDA) content by 21.8-97.9%, while decreased net photosynthesis rate (Pn) by 11.5-22.4% compared to those in non-stressed plants, PVC MPs caused the most severe oxidative stress, while MPs stress resulted in Pn reduction caused by non-stomatal restriction. The reason for this is the single and composite MPs stress resulted in a 6% to 23% reduction in soybean PSII activity RCs reaction centers, along with negative effects on soybean PSII energy uptake, capture, transport, and dissipation. The presence of K-band and L-band also represents an imbalance in the number of electrons on the donor and acceptor side of PSII and a decrease in PSII energy transfer. Similarly, PVC single stress caused greater effects on soybean chloroplast PSII than PE single stress and combined stresses.DiscussionPE and PVC microplastic stress led to oxidative stress in soybean, which affected the structure and function of photosynthetic PSII in soybean, ultimately leading to a decrease in net photosynthetic rate in soybean.

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Does humic acid foliar application affect growth and nutrient status of water‐stressed maize?

Pitann,

Khan,

Mühling

2024

Plant Enviro Interactions

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Maize (Zea mays L.) is one of the world's most important crops, but its productivity is at high risk as climate change increases the risk of water stress. Therefore, the development of mitigation strategies to combat water stress in agriculture is fundamental to ensure food security. Humic acids are known to have a positive effect on drought tolerance, but data on their efficacy under waterlogging are lacking. This study aimed to elucidate the effect of a new humic acid product, a by‐product of Ukrainian bentonite mining, on maize growth and nutrient status under waterlogging. Maize was grown for 9 weeks and three water stress treatments, which were applied for 14 days: waterlogging, alternating waterlogging and drought, and drought. On the day of stress application, the humic acid product (1% v/v) was applied to the leaves. Soil Plant Analysis Development (SPAD) values were recorded during the stress treatments. Plants were harvested after stressing ceased and fresh weight and P and Zn status were analyzed. Drought reduced shoot fresh weight, while it was unaffected under waterlogging. This is in contrast to SPAD readings, which showed a significant decrease over time under submergence, but not under drought. Under alternating stress, although SPAD values declined under waterlogging but stabilized when switched to drought, no growth reduction was apparent. Application of the humic acid product was ineffective in all cases. Although anthocyanin discoloration occurred under waterlogging stress, P deficiency, which is usually the main factor driving anthocyanin formation, was not the reason. Interestingly, Zn concentration decreased under waterlogging but not under the other stresses, which was alleviated by humic acid application. However, no effect of foliar‐applied humic acids was observed under alternating and drought stress. It can be concluded that the tested humic acid product has the potential to improve the Zn status of maize under waterlogging.

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Foliar application of humic acid decreased hazard of cadmium toxicity on the growth of Hybrid Pennisetum

Cited by 16 publications

References 96 publications

Effect of Humic Acid on Tolerance indexes of Barley plant to Cadmium Toxicity

Effect of Humic Acid on Tolerance indexes of Barley plant to Cadmium Toxicity

Single and composite damage mechanisms of soil polyethylene/polyvinyl chloride microplastics to the photosynthetic performance of soybean (Glycine max [L.] merr.)

Does humic acid foliar application affect growth and nutrient status of water‐stressed maize?

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