Characterization of <i>Arabidopsis</i> sterol glycosyltransferase <i>TTG15/UGT80B1</i> role during freeze and heat stress

Mishra, Manoj Kumar; Singh, Gaurav; Tiwari, Shalini; Singh, Ruchi; Kumari, Nishi; Misra, Pratibha

doi:10.1080/15592324.2015.1075682

Cited by 38 publications

(26 citation statements)

References 30 publications

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“…For example, overexpression of cis‐ vaccenic acid in transgenic tomato ( Solanum lycopersicum ) lines resulted in an improved tolerance to freezing temperatures (De Palma et al ., ; Badea and Basu, ). Moreover, the apple samples treated with exogenous application of 1‐MCP showed a higher concentration of desmosterol, a sterol that confers adaptation to freezing stress in A. thaliana (Mishra et al ., ). The other apple samples in this current study (the two controls and T2_1‐MCP) were more oriented towards the projection of other classes of lipids in the PCA plot.…”

Section: Discussionmentioning

confidence: 97%

Apple fruit superficial scald resistance mediated by ethylene inhibition is associated with diverse metabolic processes

et al. 2017

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Fruits stored at low temperature can exhibit different types of chilling injury. In apple, one of the most serious physiological disorders is superficial scald, which is characterized by discoloration and brown necrotic patches on the fruit exocarp. Although this phenomenon is widely ascribed to the oxidation of α-farnesene, its physiology is not yet fully understood. To elucidate the mechanism of superficial scald development and possible means of prevention, we performed an integrated metabolite screen, including an analysis of volatiles, phenols and lipids, together with a large-scale transcriptome study. We also determined that prevention of superficial scald, through the use of an ethylene action inhibitor, is associated with the triggering of cold acclimation-related processes. Specifically, the inhibition of ethylene perception stimulated the production of antioxidant compounds to scavenge reactive oxygen species, the synthesis of fatty acids to stabilize plastid and vacuole membranes against cold temperature, and the accumulation of the sorbitol, which can act as a cryoprotectant. The pattern of sorbitol accumulation was consistent with the expression profile of a sorbitol 6-phosphate dehydrogenase, MdS6PDH, the overexpression of which in transgenic Arabidopsis thaliana plants confirmed its involvement in the cold acclimation and freezing tolerance.

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Section: Discussionmentioning

confidence: 97%

Apple fruit superficial scald resistance mediated by ethylene inhibition is associated with diverse metabolic processes

et al. 2017

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“…For salt and osmotic/drought stresses, 100 mM NaCl and 20% polyethylene glycol (PEG) was supplied, respectively ( Srivastava et al, 2012 ; Nautiyal et al, 2013 ). For desiccation, seedlings were transferred to sterile Whatman filter paper and for heat, cold and freeze stresses, rice seedlings were transferred to 45°C, ∼4°C, and ≤0°C, respectively ( Mishra et al, 2015 ). For various phytohormone treatments, both inoculated and uninoculated seedlings 100 μm each of ABA, SA, JA, and ethephon was supplied to the Hewitt medium as described elsewhere ( Van Bockhaven et al, 2015 ).…”

Section: Methodsmentioning

confidence: 99%

Bacillus amyloliquefaciens Confers Tolerance to Various Abiotic Stresses and Modulates Plant Response to Phytohormones through Osmoprotection and Gene Expression Regulation in Rice

et al. 2017

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Being sessile in nature, plants have to withstand various adverse environmental stress conditions including both biotic and abiotic stresses. Comparatively, abiotic stresses such as drought, salinity, high temperature, and cold pose major threat to agriculture by negatively impacting plant growth and yield worldwide. Rice is one of the most widely consumed staple cereals across the globe, the production and productivity of which is also severely affected by different abiotic stresses. Therefore, several crop improvement programs are directed toward developing stress tolerant rice cultivars either through marker assisted breeding or transgenic technology. Alternatively, some known rhizospheric competent bacteria are also known to improve plant growth during abiotic stresses. A plant growth promoting rhizobacteria (PGPR), Bacillus amyloliquefaciens NBRI-SN13 (SN13) was previously reported by our lab to confer salt stress tolerance to rice seedlings. However, the present study investigates the role of SN13 in ameliorating various abiotic stresses such as salt, drought, desiccation, heat, cold, and freezing on a popular rice cv. Saryu-52 under hydroponic growth conditions. Apart from this, seedlings were also exogenously supplied with abscisic acid (ABA), salicylic acid (SA), jasmonic acid (JA) and ethephon (ET) to study the role of SN13 in phytohormone-induced stress tolerance as well as its role in abiotic and biotic stress cross-talk. All abiotic stresses and phytohormone treatments significantly affected various physiological and biochemical parameters like membrane integrity and osmolyte accumulation. SN13 also positively modulated stress-responsive gene expressions under various abiotic stresses and phytohormone treatments suggesting its multifaceted role in cross-talk among stresses and phytohormones in response to PGPR. To the best of our knowledge, this is the first report on detailed analysis of plant growth promotion and stress alleviation by a PGPR in rice seedlings subjected to various abiotic stresses and phytohormone treatments for 0, 1, 3, 10, and 24 h.

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“…3b and Fig. 4 E1,E2,E3) genes are responsible for antibacterial immunity [41] and freezing and heat stress resistance [42], respectively.…”

Section: Regions (Genes) Under Artificial Selectionmentioning

confidence: 99%

Comparative population genomics reveals genetic divergence and selection in lotus, Nelumbo nucifera

Zhu

Zheng

et al. 2020

BMC Genomics

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Background: Lotus (Nelumbo nucifera) is an aquatic plant with important agronomic, horticulture, art and religion values. It was the basal eudicot species occupying a critical phylogenetic position in flowering plants. After the domestication for thousands of years, lotus has differentiated into three cultivated types-flower lotus, seed lotus and rhizome lotus. Although the phenotypic and genetic differentiations based on molecular markers have been reported, the variation on whole-genome level among the different lotus types is still ambiguous. Results: In order to reveal the evolution and domestication characteristics of lotus, a total of 69 lotus accessions were selected, including 45 cultivated accessions, 22 wild sacred lotus accessions, and 2 wild American lotus accessions. With Illumina technology, the genomes of these lotus accessions were resequenced to > 13× raw data coverage. On the basis of these genomic data, 25 million single-nucleotide polymorphisms (SNPs) were identified in lotus. Population analysis showed that the rhizome and seed lotus were monophyletic and genetically homogeneous, whereas the flower lotus was biphyletic and genetically heterogeneous. Using population SNP data, we identified 1214 selected regions in seed lotus, 95 in rhizome lotus, and 37 in flower lotus. Some of the genes in these regions contributed to the essential domestication traits of lotus. The selected genes of seed lotus mainly affected lotus seed weight, size and nutritional quality. While the selected genes were responsible for insect resistance, antibacterial immunity and freezing and heat stress resistance in flower lotus, and improved the size of rhizome in rhizome lotus, respectively. Conclusions: The genome differentiation and a set of domestication genes were identified from three types of cultivated lotus-flower lotus, seed lotus and rhizome lotus, respectively. Among cultivated lotus, flower lotus showed the greatest variation. The domestication genes may show agronomic importance via enhancing insect resistance, improving seed weight and size, or regulating lotus rhizome size. The domestication history of lotus enhances our knowledge of perennial aquatic crop evolution, and the obtained dataset provides a basis for future genomics-enabled breeding.

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Characterization of Arabidopsis sterol glycosyltransferase TTG15/UGT80B1 role during freeze and heat stress

Cited by 38 publications

References 30 publications

Apple fruit superficial scald resistance mediated by ethylene inhibition is associated with diverse metabolic processes

Apple fruit superficial scald resistance mediated by ethylene inhibition is associated with diverse metabolic processes

Bacillus amyloliquefaciens Confers Tolerance to Various Abiotic Stresses and Modulates Plant Response to Phytohormones through Osmoprotection and Gene Expression Regulation in Rice

Comparative population genomics reveals genetic divergence and selection in lotus, Nelumbo nucifera

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