Brassinosteroid Action in Plant Abiotic Stress Tolerance

Krishna, Priti; Prasad, Bishun Deo; Rahman, Toufiqur

doi:10.1007/978-1-4939-6813-8_16

Cited by 40 publications

(19 citation statements)

References 23 publications

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“…The pivotal role of ethylene on plant growth and abiotic stress response was discussed by Dubois and colleagues [80], who showed that an increasing number of transcriptome studies in plants exposed to abiotic stress suggested a role for ethylene under a broad range of stresses. Plant steroidal hormones like brassinosteroids were also involved in the plant abiotic stress response, including molecular mechanisms that confer tolerance against heat, cold, drought, and salt stress [81]. We also observed the (Fig.…”

Section: Discussionsupporting

confidence: 59%

Plant chemical priming by humic acids

Canellas

Irineu

et al. 2020

Chem. Biol. Technol. Agric.

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Background: Global market of humic substances has been increasing steadily based on the perception of the multifunctional properties as plant biostimulant, microbial vehicle and plant protective agent against environmental stress. Some field assays and many experimental observations have shown that humic matter could relieve the abiotic stress effects. Here, we explored the plant chemical priming effect concept, i.e., plant preconditioning by prior exposure to an appropriate dose of humic acids with the objective to reduce toxicity from a subsequent harmful exposure to abiotic stressor, such as salinity, drought, heavy metals and humic acids themselves. Materials and methods: The prime state (PS) was characterized using traditional stress markers like proline content and catalase activity was well as the transcription level of mRNA of phytohormones-responsive genes, cell signaling, stress-responsive genes and transcription factors. A dose-response curve was built for stressor agents since maize seedlings in the PS were submitted to salinity, drought, chromium toxicity and humic acids concentration to reduce 50% of root fresh weight with respect to control plants. Results: The PS or adaptive response by biostimulation of humic substances was described at transcriptional level, where the hormonal signaling pathways including abscisic acid, gibberellic and auxins, specific abiotic functional and regulatory stress-responsive genes were positively modulated. The negative impact of stressor agents was alleviated in the maize seedlings primed by humic acids. Conclusion: Chemical priming by humic substances is a promising field tool in plant stress physiology and crop stress management.

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Section: Discussionsupporting

confidence: 59%

Plant chemical priming by humic acids

Canellas

Irineu

et al. 2020

Chem. Biol. Technol. Agric.

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“…Brassinosteroids are a unique class of plant hormones that are essential for normal plant growth [120,121]. However, to date, the roles of these substances in plant leaf senescence have not been studied in depth.…”

Section: A Role Of Brassinosteroids and Ga In Leaf Senescence Of Red mentioning

confidence: 99%

Integrating transcriptomic and metabolomic analysis of hormone pathways in Acer rubrum during developmental leaf senescence

Junlan

Xuan

et al. 2020

Preprint

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Background: To fully elucidate the roles and mechanisms of plant hormones in leaf senescence, we adopted an integrated analysis of both non-senescing and senescing leaves from red maple with transcriptome and metabolome data.Results: Transcription and metabolite profiles were generated through a combination of deep sequencing, third-generation sequencing data analysis, and ultrahigh-performance liquid chromatograph Q extractive mass spectrometry (UHPLC-QE-MS), respectively. We investigated the accumulation of compounds and the expression of biosynthesis and signaling genes for eight hormones. The results revealed that ethylene and abscisic acid concentrations increased during the leaf senescence process, while the contents of cytokinin, auxin, jasmonic acid, and salicylic acid continued to decrease. Correlation tests between the hormone content and transcriptional changes were analyzed, and in six pathways, genes closely linked with leaf senescence were identified.Conclusions: These results will enrich our understanding of the mechanisms of plant hormones that regulate leaf senescence in red maple, while establishing a foundation for the genetic modification of Acer in the future.

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“…Phytohormones play signi cant roles in regulating developmental processes and signal transduction networks that respond to various abiotic and biotic stresses. Brassinosteroid (BR), jasmonate (JA), gibberellin (GA), salicylic acid (SA), and auxin regulate plant growth, development, stress, and defense responses [4][5][6][7][8][9], but how phytohormones mediate the growth and stress trade-off is unclear.…”

Section: Introductionmentioning

confidence: 99%

Response of phytohormone mediated plant homeodomain (PHD) family to abiotic stress in upland cotton (Gossypium hirsutum spp.)

Zheng

Qanmber

et al. 2020

Preprint

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Abstract Background: The sequencing and annotations of cotton genomes provide powerful theoretical support to unravel more physiological and functional information. Plant homeodomain (PHD) protein family has been reported to be involved in regulating various biological processes in plants. However, their functional studies have not yet been carried out in cotton. Results: In this study, 108, 55, and 52 PHD genes were identified in G. hirsutum, G. raimondii, and G. arboreum, respectively. A total of 297 PHD genes from three cotton species, Arabidopsis, and rice were divided into five groups. We performed chromosomal location, phylogenetic relationship, gene structure, and conserved domain analysis for GhPHD genes. GhPHD genes were unevenly distributed on each chromosome, however, more GhPHD genes were distributed on At_05, Dt_05, and At_07 chromosomes. GhPHD proteins depicted conserved domains, and GhPHD genes exhibiting similar gene structure were clustered together. Further, whole genome duplication analysis indicated that purification selection greatly contributed to the functional maintenance of GhPHD gene family. Expression pattern analysis based on RNA-seq data showed that most GhPHD genes showed clear tissue-specific spatiotemporal expression patterns elucidating the multiple functions of GhPHDs in plant growth and development. Moreover, analysis of cis-acting elements revealed that GhPHDs may respond to a variety of abiotic and phytohormonal stresses. In this regard, some GhPHD genes showed good response against abiotic and phytohormonal stresses. Additionally, co-expression network analysis indicated that GhPHDs are essential for plant growth and development, while GhPHD genes response against abiotic and phytohormonal stresses may help to improve plant tolerance in adverse environmental conditions. Conclusion: This study will provide useful information to facilitate further research related to the vital roles of GhPHD gene family in plant growth and development.

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Brassinosteroid Action in Plant Abiotic Stress Tolerance

Cited by 40 publications

References 23 publications

Plant chemical priming by humic acids

Plant chemical priming by humic acids

Integrating transcriptomic and metabolomic analysis of hormone pathways in Acer rubrum during developmental leaf senescence

Response of phytohormone mediated plant homeodomain (PHD) family to abiotic stress in upland cotton (Gossypium hirsutum spp.)

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