Overexpression of TaSIM provides increased drought stress tolerance in transgenic Arabidopsis

Yu, Yuehua; Bi, Chenxi; Wang, Qing

doi:10.1016/j.bbrc.2019.03.007

Cited by 21 publications

(9 citation statements)

References 23 publications

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“…MYB is an important TF involved in cell differentiation and root growth and induces the expression of ABA-related genes under drought stress (Imran et al, 2018). Overexpressing MYB2 transgenic Arabidopsis had enhanced osmotic stress tolerance, and MYB TFs were induced by exogenous ABA to regulate stomatal movement (Yu et al, 2019;Dossa et al, 2020). In our study, the MYB family contained the largest number of TFs.…”

Section: Role Of Transcription Factors In the Drought Stress Of Heimi...mentioning

confidence: 60%

Transcriptome Approach Reveals the Response Mechanism of Heimia myrtifolia (Lythraceae, Myrtales) to Drought Stress

Lin¹,

Wang²,

Wang³

et al. 2022

Front. Plant Sci.

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Drought is a major environmental condition that inhibits the development and cultivation of Heimia myrtifolia. The molecular processes of drought resistance in H. myrtifolia remain unknown, which has limited its application. In our study, transcriptome analyzes were compared across three treatment groups (CK, T1, and T2), to investigate the molecular mechanism of drought resistance. Plant leaves wilted and drooped as the duration of drought stress increased. The relative water content of the leaves declined dramatically, and relative electrolyte leakage rose progressively. Using an RNA-Seq approach, a total of 62,015 unigenes with an average length of 1730 bp were found, with 86.61% of them annotated to seven databases, and 14,272 differentially expressed genes (DEGs) were identified in drought stress. GO and KEGG enrichment analyzes of the DEGs revealed significantly enriched KEGG pathways, including photosynthesis, photosynthetic antenna proteins, plant hormone signal transduction, glutathione metabolism, and ascorbate and aldarate metabolism. Abscisic acid signal transduction was the most prevalent in the plant hormone signal transduction pathway, and other plant hormone signal transductions were also involved in the drought stress response. The transcription factors (including MYB, NAC, WRKY, and bHLH) and related differential genes on significantly enriched pathways all played important roles in the drought process, such as photosynthesis-related genes and antioxidant enzyme genes. In conclusion, this study will provide several genetic resources for further investigation of the molecular processes that will be beneficial to H. myrtifolia cultivation and breeding.

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Section: Role Of Transcription Factors In the Drought Stress Of Heimi...mentioning

confidence: 60%

Transcriptome Approach Reveals the Response Mechanism of Heimia myrtifolia (Lythraceae, Myrtales) to Drought Stress

Lin¹,

Wang²,

Wang³

et al. 2022

Front. Plant Sci.

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“…2C-D). Additionally, relative expression of the drought response genes RD22 and RD29A (Huang et al, 2018; Yu et al, 2019) was equal in both genotypes as a result of drought (Fig. 2E-F).…”

Section: Resultsmentioning

confidence: 93%

Uncoupling differential water usage from drought resistance in a dwarf Arabidopsis mutant

Ginzburg

Bossi

Rhee

2021

Preprint

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Understanding the molecular and physiological mechanisms of how plants respond to drought is paramount to breeding more drought resistant crops. Certain mutations or allelic variations result in plants with altered water-use requirements. To correctly identify genetic differences which confer a drought phenotype, plants with different genotypes must therefore be subjected to equal levels of drought stress. Many reports of advantageous mutations conferring drought resistance do not control for soil water content variations across genotypes and may therefore need to be re-examined. Here, we reassessed the drought phenotype of the Arabidopsis thaliana dwarf mutant, chiquita1-1 (also called cost1), by growing mutant seedlings together with the wild type to ensure uniform soil water availability across genotypes. Our results demonstrate that the dwarf phenotype conferred by loss of CHIQ1 function results in constitutively lower water usage, but not increased drought resistance.

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“…3D). The early response to drought (ERD) genes plays an important function in preventing dehydration of plant tissues and [45]. From the study, although ERD1 gene was highly and differentially expressed in genotypes, the marked increase in the expression pattern of ERD1 was noticed in PI 585456 compared to other genotypes ( Fig.…”

Section: Transcriptional Response To Drought Among Sorghum Genotypesmentioning

confidence: 92%

Comparative Physiological, Biochemical and Transcript Response to Drought in Sorghum Genotypes

Amoah

Antwi‐Berko

2020

BJI

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Sorghum [Sorghum bicolor (L.) Moench] is considered as an important staple crop in the tropical regions. However, the productivity of this useful crop is hindered by drought which contributes to significant yield reduction. The present study aimed to decipher the effects of drought stress on physiological, biochemical and gene expression changes in sorghum genotypes and to ascertain the differences in their response to drought stress. To achieve these objectives, six sorghum genotypes were grown in pot culture in a greenhouse, in a randomized complete block design and exposed to water stress treatment for 10 days. From the study, drought stress caused a significant (P < .05) reduction in plant height, leaf water and chlorophyll contents while the proline, malondialdehyde (MDA), soluble sugar, electrolyte leakage (EL), hydrogen peroxide (H2O2) and antioxidant enzymes activity increased significantly (P < .05) and differentially in all sorghum genotypes. Among the genotypes investigated, PI 585456 showed enhanced performance and was considered as the most tolerant to drought in relation to plant growth and water relation, membrane status, photosynthetic activity, ROS and osmolytes accumulation and antioxidant enzymes activity. Furthermore, the transcript expression analyses of different categories of drought-responsive genes, viz; antioxidant-related, osmolytes biosynthesis-related, dehydrin-related, photosystem-related and transcription-related were differentially upregulated in sorghum genotypes investigated. The results revealed the differences in metabolic response to drought among the genotypes, which accentuated the physiological, biochemical and molecular mechanism related to a specific response that may play a vital role in drought tolerance in sorghum.

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Overexpression of TaSIM provides increased drought stress tolerance in transgenic Arabidopsis

Cited by 21 publications

References 23 publications

Transcriptome Approach Reveals the Response Mechanism of Heimia myrtifolia (Lythraceae, Myrtales) to Drought Stress

Transcriptome Approach Reveals the Response Mechanism of Heimia myrtifolia (Lythraceae, Myrtales) to Drought Stress

Uncoupling differential water usage from drought resistance in a dwarf Arabidopsis mutant

Comparative Physiological, Biochemical and Transcript Response to Drought in Sorghum Genotypes

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