Plant Proteomics and Metabolomics Investigations in Regulation of Brassinosteroid

Ahmad, Aqeel; Shahzadi, Iqra; Akram, Waheed; Yasin, Nasim Ahmad; Khan, Waheed Ullah; Wu, Tianbin

doi:10.1007/978-981-16-5743-6_2

Cited by 1 publication

(2 citation statements)

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“…For example, brassinosteroids were found to protect maize from amphetamine damage [21], while gibberellin can alleviate S-metolachlor damage in rice seedlings [23]. In general, plant growth regulators help plants increase their metabolic levels, including antioxidant capacity and related gene expression [49][50][51][52][53], and reducing herbicide damage [54,55]. In this study, combined application of plant growth regulators improved physiological metabolism in cotton exposed to MCPA-Na, increasing the chlorophyll content and reducing the MDA content.…”

Section: Discussionmentioning

confidence: 99%

“…In this study, combined application of plant growth regulators improved physiological metabolism in cotton exposed to MCPA-Na, increasing the chlorophyll content and reducing the MDA content. It is worth noting that specific plant growth regulators should be used in different growth stages of cotton, because the demand for plant growth regulators is different in different growth stages of cotton [52,53], and the resistance of cotton to herbicide damage is also different. From a physiological point of view, the application of phthalanilic acid + seaweed fertilizer (T4) alleviated MCPA-Na damage at the seedling stage, the application of 24-epibrassinolide + seaweed fertilizer (T3) alleviated MCPA-Na damage at the budding stage, while at the flowering and boll stage, the application of GA 3 + seaweed fertilizer (T2) is recommended.…”

Section: Discussionmentioning

confidence: 99%

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Use of plant growth regulators to reduce 2-methyl-4-chlorophenoxy acetic acid-Na (MPCA-Na) damage in cotton (Gossypium hirsutum)

Zhang

Wang

2022

BMC Plant Biol

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Background 2-methyl-4-chlorophenoxy acetic acid-Na (MPCA-Na) is a phenoxy carboxylic acid selective hormone herbicide that is widely used in the crop fields. However, drift of MPCA-Na during application is highly damaging to cotton (Gossypium hirsutum) and other crop plants. This study was carried out from 2019 to 2020 to determine the effects of different concentrations of MPCA-Na on physiological and metabolic activities besides growth and yield of cotton plants at seedling, budding, flowering and boll stages. Moreover, we evaluated the different combinations of 24-epibrassinolide, gibberellin (GA3), phthalanilic acid and seaweed fertilizer to ameliorate herbicide damage. Results 2-methyl-4-chlorophenoxy acetic acid-Na (MPCA-Na) exposure caused a decrease in the chlorophyll content, and an increase in the soluble protein content, Malondialdehyde (MDA) content and protective enzyme activity. It also caused significant reductions in plant height, boll number and the single boll weight at the seedling and budding stages, but had little effects on plant height and the single boll weight at flowering and boll stage. Under the maximum recommended dose of MPCA-Na (130 g/L), the number of cotton bolls at seedling and budding stages decreased by 75.33 and 79.50%, respectively, and the single boll weight decreased by 46.42 and 36.31%, respectively. Nevertheless, the number of G. hirsutum bolls and single boll weight at flowering and boll stage decreased by 48.15 and 5.38%, respectively. Application of plant growth regulators decreased the MDA content, and increased chlorophyll, soluble protein content and protective enzyme activity, and alleviated MCPA-Na toxicity. Positive effects in case of growth regulators treated plants were also observed in terms of G. hirsutum yield. Phthalanilic acid + seaweed fertilizer, 24-epibrassinolide + seaweed fertilizer, and GA3 + seaweed fertilizer should be used at the seedling, budding, and flowering and boll stages, respectively. Conclusions The results of current study suggest that certain plant growth regulators could be used to alleviate MPCA-Na damage and maintain G. hirsutum yield. When the cotton exposed to MCPA-Na at the seedling stage, it should be treated with phthalanilic acid + seaweed fertilizer, while plants exposed at the budding stage should be treated with 24-epibrassinolide + seaweed fertilizer, and those exposed at the flowering and boll stages should be treated with GA3 + seaweed fertilizer to mitigate stress.

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