Brassinosteroids as a multidimensional regulator of plant physiological and molecular responses under various environmental stresses

Basit, Farwa; Liu, Jiaxin; An, Jianyu; Chen, Min; He, Chong; Zhu, Xiaobo; Zhan, Li; Hu, Jin; Guan, Yajing

doi:10.1007/s11356-021-15087-8

Cited by 35 publications

(18 citation statements)

References 131 publications

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“…The necessity of BRs for plant growth has also been demonstrated by the application of the specific drug brassinazole (Brz), a BR biosynthesis inhibitor which inhibits growth, but whose action is reversed by eBL applications [ 10 ]. Although BRs were initially identified based on their growth-promoting activities, they are also now known to be involved in the responses to abiotic and biotic stresses [ 11 ]. For example, these steroids induce tolerance to drought and cold stresses in Arabidopsis thaliana and Brassica napus seedlings [ 1 , 7 ], and stimulate the growth under stress in cereal crops and pepper [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Brassinosteroids Mitigate Cadmium Effects in Arabidopsis Root System without Any Cooperation with Nitric Oxide

Rovere

Piacentini

Fattorini

et al. 2022

IJMS

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The heavy metal cadmium (Cd) affects root system development and quiescent center (QC)-definition in Arabidopsis root-apices. The brassinosteroids-(BRs)-mediated tolerance to heavy metals has been reported to occur by a modulation of nitric oxide (NO) and root auxin-localization. However, how BRs counteract Cd-action in different root types is unknown. This research aimed to find correlations between BRs and NO in response to Cd in Arabidopsis’s root system, monitoring their effects on QC-definition and auxin localization in root-apices. To this aim, root system developmental changes induced by low levels of 24-epibrassinolide (eBL) or by the BR-biosynthesis inhibitor brassinazole (Brz), combined or not with CdSO4, and/or with the NO-donor nitroprusside (SNP), were investigated using morpho-anatomical and NO-epifluorescence analyses, and monitoring auxin-localization by the DR5::GUS system. Results show that eBL, alone or combined with Cd, enhances lateral (LR) and adventitious (AR) root formation and counteracts QC-disruption and auxin-delocalization caused by Cd in primary root/LR/AR apices. Exogenous NO enhances LR and AR formation in Cd-presence, without synergism with eBL. The NO-signal is positively affected by eBL, but not in Cd-presence, and BR-biosynthesis inhibition does not change the low NO-signal caused by Cd. Collectively, results show that BRs ameliorate Cd-effects on all root types acting independently from NO.

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Section: Introductionmentioning

confidence: 99%

Brassinosteroids Mitigate Cadmium Effects in Arabidopsis Root System without Any Cooperation with Nitric Oxide

Rovere

Piacentini

Fattorini

et al. 2022

IJMS

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“…Brassinosteroids (BRs) are polyhydroxy steroidal phytohormones that govern root and stem growth, as well as flower initiation and development in plants ( Basit et al, 2021 ; Manghwar et al, 2022 ). Brassica napus was the source of the first BRs.…”

Section: Aptitude Of Phytohormones In Stress Tolerancementioning

confidence: 99%

Role of Promising Secondary Metabolites to Confer Resistance Against Environmental Stresses in Crop Plants: Current Scenario and Future Perspectives

et al. 2022

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Plants often face incompatible growing environments like drought, salinity, cold, frost, and elevated temperatures that affect plant growth and development leading to low yield and, in worse circumstances, plant death. The arsenal of versatile compounds for plant consumption and structure is called metabolites, which allows them to develop strategies to stop enemies, fight pathogens, replace their competitors and go beyond environmental restraints. These elements are formed under particular abiotic stresses like flooding, heat, drought, cold, etc., and biotic stress such as a pathogenic attack, thus associated with survival strategy of plants. Stress responses of plants are vigorous and include multifaceted crosstalk between different levels of regulation, including regulation of metabolism and expression of genes for morphological and physiological adaptation. To date, many of these compounds and their biosynthetic pathways have been found in the plant kingdom. Metabolites like amino acids, phenolics, hormones, polyamines, compatible solutes, antioxidants, pathogen related proteins (PR proteins), etc. are crucial for growth, stress tolerance, and plant defense. This review focuses on promising metabolites involved in stress tolerance under severe conditions and events signaling the mediation of stress-induced metabolic changes are presented.

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“…( Singh et al, 2013 , Basit et al, 2021a ). Rice is a valuable crop that is susceptible to Cr toxicity ( Mukta et al, 2019 , Basit et al, 2021b : Sharma et al, 2022 ). Screening rice cultivars by seed germination ratio and Cr-tolerant cultivars based on morpho-physiological traits, and plant biomass under Cr stress would help us better understand the Cr tolerance mechanism in rice, which is yet unclear.…”

Section: Discussionmentioning

confidence: 99%

Screening of rice cultivars for Cr-stress response by using the parameters of seed germination, morpho-physiological and antioxidant analysis

Basit

Bhat

Han

et al. 2022

Saudi Journal of Biological Sciences

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Brassinosteroids as a multidimensional regulator of plant physiological and molecular responses under various environmental stresses

Cited by 35 publications

References 131 publications

Brassinosteroids Mitigate Cadmium Effects in Arabidopsis Root System without Any Cooperation with Nitric Oxide

Brassinosteroids Mitigate Cadmium Effects in Arabidopsis Root System without Any Cooperation with Nitric Oxide

Role of Promising Secondary Metabolites to Confer Resistance Against Environmental Stresses in Crop Plants: Current Scenario and Future Perspectives

Screening of rice cultivars for Cr-stress response by using the parameters of seed germination, morpho-physiological and antioxidant analysis

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