Natural alleles of a proteasome α2 subunit gene contribute to thermotolerance and adaptation of African rice

Li, Xinmin; Chao, Dai‐Yin; Wu, Yan; Huang, Xuehui; Chen, Ke; Long-Gang, Cui; Su, Lei; Ye, Wang-Wei; Chen, Hao; Chen, Hua‐Chang; Dong, Nai-Qian; Guo, Tao; Shi, Min; Feng, Qi; Zhang, Peng; Han, Bin; Shan, Jun-Xiang; Gao, Jinliang; Lin, Hong‐Xuan

doi:10.1038/ng.3305

Cited by 273 publications

(216 citation statements)

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“…However, these studies have mainly been restricted to the model plant Arabidopsis [9][10][11][12][13][14] . Many studies have shown that expression of heat shock proteins (HSPs) can improve the tolerance of transgenic plants to heat shock (short exposure to high temperatures) 15 . In particular, HSP101 is required for thermotolerance in plants and has potential as a tool for crop improvements.…”

Section: E T T E R Smentioning

confidence: 99%

Overexpression of receptor-like kinase ERECTA improves thermotolerance in rice and tomato

et al. 2015

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The detrimental effects of global warming on crop productivity threaten to reduce the world's food supply. Although plant responses to changes in temperature have been studied, genetic modification of crops to improve thermotolerance has had little success to date. Here we demonstrate that overexpression of the Arabidopsis thaliana receptor-like kinase ERECTA (ER) in Arabidopsis, rice and tomato confers thermotolerance independent of water loss and that Arabidopsis er mutants are hypersensitive to heat. A loss-of-function mutation of a rice ER homolog and reduced expression of a tomato ER allele decreased thermotolerance of both species. Transgenic tomato and rice lines overexpressing Arabidopsis ER showed improved heat tolerance in the greenhouse and in field tests at multiple locations in China during several seasons. Moreover, ER-overexpressing transgenic Arabidopsis, tomato and rice plants had increased biomass. Our findings could contribute to engineering or breeding thermotolerant crops with no growth penalty.

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Section: E T T E R Smentioning

confidence: 99%

Overexpression of receptor-like kinase ERECTA improves thermotolerance in rice and tomato

et al. 2015

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“…Similarly, seedling survival and root growth at high temperature for natural populations of Arabidopsis thaliana correlated to temperature parameters at the site of origin (Zhang et al 2015). In rice, the presence of a major quantitative trait locus (QTL) for thermotolerance, TT1, has also been linked to the local temperature profile (Li et al 2015). Such local adaptation may also be seen at the molecular level, as the heat stress response of Arabidopsis and Chenopodium album accessions, as measured by induction of heat shock proteins, was more strongly induced in accessions originating from cooler rather than warmer environments (Barua et al 2008;Zhang et al 2015).…”

Section: Local Adaptationmentioning

confidence: 99%

Exploring the natural variation for reproductive thermotolerance in wild tomato species

et al. 2018

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Climate change has become a serious threat for crop productivity worldwide. The increased frequency of heat waves strongly affects reproductive success and thus yield for many crop species, implying that breeding for thermotolerant cultivars is critical for food security. Insight into the genetic architecture of reproductive heat tolerance contributes to our fundamental understanding of the stress sensitivity of this process and at the same time may have applied value. In the case of tomato (Solanum lycopersicum), germplasm screenings for thermotolerance have often used yield as the main measured trait. However, due to the complex nature of yield and the relatively narrow genetic variation present in the cultivated germplasm screened, there has been limited progress in understanding the genetic basis of reproductive heat tolerance. Extending the screening to wild accessions of related species that cover a range of climatic conditions might be an effective approach to find novel, more tolerant genetic resources. The purpose of this study was to provide insight into the sensitivity of individual reproductive key traits (i.e. the number of pollen per flower, pollen viability and style protrusion) to heat-wave like long-term mild heat (LTMH), and determine the extent to which genetic variation exists for these traits among wild tomato species. We found that these traits were highly variable among the screened accessions. Although no overall thermotolerant species were identified, several S. pimpinellifolium individuals outperformed the best performing cultivar in terms of pollen viability under LTMH. Furthermore, we reveal that there has been local adaptation of reproductive heat tolerance, as accessions from lower elevations and higher annual temperature are more likely to show high pollen viability under LTMH.

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“…These QTL qSF4 and qSF6, apparently stress-induced were found in Xiushui 09 and IR2061 alleles, respectively and possible to use in breeding rice tolerant to HTS (Cheng et al, 2012). Also, a QTL encoding the α2 subunit of the 26S proteasome was identified in the heat-tolerant wild African rice (Oryza glaberrima) that is involved in the degradation of ubiquitinated proteins and OgTT1 when overexpressed in rice, conferring tolerance (Li et al, 2015b). Selection of rice varieties that flower early in the morning (EMF) is one criterion to avoid daytime HTS and reduce spikelet sterility (GRiSP, 2013).…”

Section: Mapping Of Genetic Loci (Qtl) and Genome-wide Association Stmentioning

confidence: 99%

When water runs dry and temperature heats up: Understanding the mechanisms in rice tolerance to drought and high temperature stress conditions

Rabara¹,

Msanne²,

Ferrer³

et al. 2018

Preprint

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Rice production, owing to its high-water requirement for cultivation, is very vulnerable to the threat of changing climate, particularly prolonged drought and high temperature. Such threats heighten the need for abiotic stress-resilient rice varieties with better yield potential. This review examines the physiological and molecular mechanisms of rice varieties to cope with stress conditions of drought (DS), high temperature (HTS) and their combination (DS-HTS). It appraises research studies in rice about its various phenotypic traits, genetic loci and response mechanisms to stress conditions to help craft new breeding strategies for rice varieties with improved resilience to abiotic stresses. This review consolidates available information on promising rice cultivars with desirable traits as well as advocates synergistic and complementary approaches in molecular and systems biology to develop new rice breeds that favorably respond to climate-induced abiotic stresses. The development of new breeding and cultivation strategies for climate-resilient rice varieties is a challenging task. It requires a comprehensive understanding of the various morphological, biochemical, physiological, and molecular components governing yield under drought and high temperature, but possible by implementing cohesive approaches involving molecular and systems biology approaches in genomics and molecular breeding, including genetic engineering.

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Natural alleles of a proteasome α2 subunit gene contribute to thermotolerance and adaptation of African rice

Cited by 273 publications

References 50 publications

Overexpression of receptor-like kinase ERECTA improves thermotolerance in rice and tomato

Overexpression of receptor-like kinase ERECTA improves thermotolerance in rice and tomato

Exploring the natural variation for reproductive thermotolerance in wild tomato species

<strong>When water runs dry and temperature heats up: </strong><strong>Understanding the mechanisms in rice tolerance to drought and </strong><strong>high temperature stress conditions</strong>

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