Molecular Characterization of a MYB Protein from Oryza sativa for its Role in Abiotic Stress Tolerance

Deeba, Farah; Sultana, Tasawar; Javaid, Bushra; Mahmood, Tariq; Naqvi, Syed Muhammad Saqlan

doi:10.1590/1678-4324-2017160352

Cited by 15 publications

(5 citation statements)

References 26 publications

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“…This MYB was one of the first discovered in apple and was also named MYB1, which has created confusion in the literature. It is most similar to the Arabidopsis MYB1 (in a clade with AtMYB109, ATMYB25, and OsMYB1), which has been shown to be upregulated in response to abiotic stresses (Deeba et al, 2017). The commercial grower reported that irrigation was turned off in the experimental orchard 4 weeks before the final samples were collected, so it is possible that the increased expression for this apple MYB was due to water stress and/or heat stress.…”

Section: Resultsmentioning

confidence: 99%

Biochemical and Gene Expression Involved in Red Blush Color Development in ‘Ambrosia’ Apple

Toivonen¹,

Stoochnoff²,

Usher³

et al. 2019

J. Amer. Soc. Hort. Sci.

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ADDITIONAL INDEX WORDS. fruit color, anthocyanin biosynthesis, MYB transcription factors, controlled environment chambers ABSTRACT. The market value of the apple (Malus ·domestica Borkh.) cultivar Ambrosia is closely linked to the characteristic blush on the skin surface. For 'Ambrosia' orchards that produce consistently low levels of surface blush, the implementation of reflective rowcovering has improved surface coloration, but the reflected wavebands responsible for this enhanced color production have not been confirmed. This study consisted of two separate experiments: one conducted in the field to confirm reflective rowcovering efficacy and the other in a controlled environment cabinet to determine which waveband was enhancing red blush production. The red blush production in orchards with and without reflective rowcovering was then directly compared with the red blush produced on the surface of apples that were poorly colored at harvest and then exposed to visible, fluorescent, ultraviolet A (UVA), or ultraviolet B (UVB) light sources within the controlled environment chamber. Consequent analysis of the red blush color within the Commission Internationale de l'Eclairage a* and b* color space was conducted to evaluate the quality of the red blush pigment under each treatment in the field and the controlled environment chamber. The analysis revealed that the red blush that developed on apples from the reflective rowcover treatment most closely matched the red blush that developed in response to UVB exposure in the controlled environment cabinet. Further analysis of gene expression and anthocyanin contents in the 'Ambrosia' apples support the hypothesis that the primary driver for the characteristic red blush development, when reflective rowcovers are used, is increased exposure to UVB light.

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Section: Resultsmentioning

confidence: 99%

Biochemical and Gene Expression Involved in Red Blush Color Development in ‘Ambrosia’ Apple

Toivonen¹,

Stoochnoff²,

Usher³

et al. 2019

J. Amer. Soc. Hort. Sci.

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“…Like in tomato, overexpression of LeAN2 improved the resistance of plants against heat stress through a high level of antioxidants activity (non-enzymatic) and a low level of ROS accumulation [103]. In rice, overexpressing OsMYB1 gene can increase the tolerance of plants to both heat and salinity stresses [104]. While in maize, OsMYB55 proved to be effective in enhancing tolerance against high temperature and drought stress with improved growth and development of seedlings [105].…”

Section: Function and Expression Pattern Of Myb Tfs Under Abiotic Strmentioning

confidence: 99%

Transcription Factors in Plant Stress Responses: Challenges and Potential for Sugarcane Improvement

Javed

Shabbir

Ali

et al. 2020

Plants

162

107

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Increasing vulnerability of crops to a wide range of abiotic and biotic stresses can have a marked influence on the growth and yield of major crops, especially sugarcane (Saccharum spp.). In response to various stresses, plants have evolved a variety of complex defense systems of signal perception and transduction networks. Transcription factors (TFs) that are activated by different pathways of signal transduction and can directly or indirectly combine with cis-acting elements to modulate the transcription efficiency of target genes, which play key regulators for crop genetic improvement. Over the past decade, significant progresses have been made in deciphering the role of plant TFs as key regulators of environmental responses in particular important cereal crops; however, a limited amount of studies have focused on sugarcane. This review summarizes the potential functions of major TF families, such as WRKY, NAC, MYB and AP2/ERF, in regulating gene expression in the response of plants to abiotic and biotic stresses, which provides important clues for the engineering of stress-tolerant cultivars in sugarcane.

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“…Similarly, the beneficial effect of different members of the WRKY gene family under excess water stress was also documented for Arabidopsis, sunflower, and other crops (Hsu et al 2013;Raineri et al 2015;Han et al 2019). In rice, an R2-R3 type MYB transcription factor (OsMYB1) is reported to be associated with waterlogging tolerance (Deeba et al 2017) and ROS scavenging (Yokotani et al 2013).…”

Section: Discussionmentioning

confidence: 90%

Identification of QTLs for stagnant flooding tolerance in rice employing genotyping by sequencing of a RIL population derived from Swarna × Rashpanjor

Chattopadhyay

Chakraborty

Samal

et al. 2021

Physiol Mol Biol Plants

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In lowland rice ecosystems stagnant flooding or partial submergence has a significant negative impact on important yield attributing traits resulting in substantial grain yield reduction. Genetics of this stress is not yet studied intensively. Rashpanjor (IC 575321), a landrace from India, was identified and used as the tolerant donor for stagnant flooding and was crossed with high yielding variety Swarna to develop the RIL population for the present investigation. Yield and yield attributing traits of 180 F 2:8 lines in rainfed non-stressed and stressed (stagnant flooding with 45 ± 5 cm standing water) conditions were recorded in the wet season of 2018 and stress susceptibility and tolerance indices of yield component traits were deduced. Homo-polymorphic high-quality SNPs between two parents derived from genotyping by sequencing were employed and 17 putative QTLs for plant height, shoot elongation, panicle number, grain weight, panicle length in control and stagnant flooding conditions were identified. Tolerance and susceptibility indexes for these traits were detected in chromosomes 1, 3, 4, 5, 6, 10, 11, and 12 with PVE ranging from 6.53 to 57.89%. Two major QTLs clusters were found for stress susceptibility index of grain and panicle weight on chromosome 1 and plant height in non-stress condition and stress tolerance index of elongation ability on chromosome 3. Putative functional genes present either in associated non-synonymous SNPs or inside the QTL regions were also predicted. Some of them were directly associated with ethylene biosynthesis and encoding auxin responsive factors for better adaptation under stagnant flooding and also coded for different transcription factors viz. NAC domain-binding protein, WRKY gene family, and MYB class known for ROS scavenging and production of metabolites to enhance tolerance to stagnant flooding.

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Molecular Characterization of a MYB Protein from Oryza sativa for its Role in Abiotic Stress Tolerance

Abstract: ABSTRACT

Cited by 15 publications

References 26 publications

Biochemical and Gene Expression Involved in Red Blush Color Development in ‘Ambrosia’ Apple

Biochemical and Gene Expression Involved in Red Blush Color Development in ‘Ambrosia’ Apple

Transcription Factors in Plant Stress Responses: Challenges and Potential for Sugarcane Improvement

Identification of QTLs for stagnant flooding tolerance in rice employing genotyping by sequencing of a RIL population derived from Swarna × Rashpanjor

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