Gene Mapping, Cloning and Association Analysis for Salt Tolerance in Rice

Fan, Xiaoru; Jiang, Hongzhen; Meng, Liang; Chen, Jingguang G.

doi:10.3390/ijms222111674

Cited by 19 publications

(16 citation statements)

References 105 publications

(263 reference statements)

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“…Salt tolerance of plants is a quantitative trait that is controlled by multiple genes [52,53]. Transcriptome analysis can scan the expression pattern of global genes and draw an overview picture to reveal the response process, which can be used to identify the mechanisms and key genes involved in salt tolerance.…”

Section: Discussionmentioning

confidence: 99%

Comparative Transcriptome Analysis of Two Sweet Sorghum Genotypes with Different Salt Tolerance Abilities to Reveal the Mechanism of Salt Tolerance

Chen

Shang

Sun

et al. 2022

IJMS

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Sweet sorghum is a C4 crop that can be grown for silage forage, fiber, syrup and fuel production. It is generally considered a salt-tolerant plant. However, the salt tolerance ability varies among genotypes, and the mechanism is not well known. To further uncover the salt tolerance mechanism, we performed comparative transcriptome analysis with RNA samples in two sweet sorghum genotypes showing different salt tolerance abilities (salt-tolerant line RIO and salt-sensitive line SN005) upon salt treatment. These response processes mainly focused on secondary metabolism, hormone signaling and stress response. The expression pattern cluster analysis showed that RIO-specific response genes were significantly enriched in the categories related to secondary metabolic pathways. GO enrichment analysis indicated that RIO responded earlier than SN005 in the 2 h after treatment. In addition, we identified more transcription factors (TFs) in RIO than SN005 that were specifically expressed differently in the first 2 h of salt treatment, and the pattern of TF change was obviously different. These results indicate that an early response in secondary metabolism might be essential for salt tolerance in sweet sorghum. In conclusion, we found that an early response, especially in secondary metabolism and hormone signaling, might be essential for salt tolerance in sweet sorghum.

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Section: Discussionmentioning

confidence: 99%

Comparative Transcriptome Analysis of Two Sweet Sorghum Genotypes with Different Salt Tolerance Abilities to Reveal the Mechanism of Salt Tolerance

Chen

Shang

Sun

et al. 2022

IJMS

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“…The phenotypic contribution rate of a single QTL ranged from 0.02% to 81.56%. A total of 167 QTLs had a contribution greater than 20%, and these occupied 22.0% of the total QTLs [ 59 ]. Gregorio and Senadhira used AFLP markers to analyze salt tolerance QTLs in a population of F 8 recombinant inbred lines of the ‘Pokkali’/‘IR29’ cross [ 60 ].…”

Section: Strategies For Salt Tolerance Improvement In Ricementioning

confidence: 99%

Improvement of Salinity Tolerance in Water-Saving and Drought-Resistance Rice (WDR)

Liu

Wang

Zhang

et al. 2023

IJMS

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Rice is one of the most economically important staple food crops in the world. Soil salinization and drought seriously restrict sustainable rice production. Drought aggravates the degree of soil salinization, and, at the same time, increased soil salinity also inhibits water absorption, resulting in physiological drought stress. Salt tolerance in rice is a complex quantitative trait controlled by multiple genes. This review presents and discusses the recent research developments on salt stress impact on rice growth, rice salt tolerance mechanisms, the identification and selection of salt-tolerant rice resources, and strategies to improve rice salt tolerance. In recent years, the increased cultivation of water-saving and drought-resistance rice (WDR) has shown great application potential in alleviating the water resource crisis and ensuring food and ecological security. Here, we present an innovative germplasm selection strategy of salt-tolerant WDR, using a population that is developed by recurrent selection based on dominant genic male sterility. We aim to provide a reference for efficient genetic improvement and germplasm innovation of complex traits (drought and salt tolerance) that can be translated into breeding all economically important cereal crops.

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“…Additionally, scientists deployed the QTLs ( qDTY1.1 , qDTY2.1 , qDTY3.1 , qDTY6.1 and qDTY12.1 ) through molecular breeding to develop and release a DT version of IR64, named DRR Dhan 42, DT MR219 and DT Sabitri [ 102 ]. There are 52 ST QTL studies on rice, and more than half of them are at the seedling stage [ 103 ]. In particular, considerable progress has been made in mapping the main QTL Saltol , which also provides an opportunity for the introduction of the Saltol QTL into 37 popular varieties in Bangladesh, India, Vietnam, and the Philippines.…”

Section: Breeding Approaches Of Drought and Salt Tolerancementioning

confidence: 99%

Candidate Genes and Pathways in Rice Co-Responding to Drought and Salt Identified by gcHap Network

Hao

Liang

et al. 2022

IJMS

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Drought and salinity stresses are significant abiotic factors that limit rice yield. Exploring the co-response mechanism to drought and salt stress will be conducive to future rice breeding. A total of 1748 drought and salt co-responsive genes were screened, most of which are enriched in plant hormone signal transduction, protein processing in the endoplasmic reticulum, and the MAPK signaling pathways. We performed gene-coding sequence haplotype (gcHap) network analysis on nine important genes out of the total amount, which showed significant differences between the Xian/indica and Geng/japonica population. These genes were combined with related pathways, resulting in an interesting mechanistic draft called the ‘gcHap-network pathway’. Meanwhile, we collected a lot of drought and salt breeding varieties, especially the introgression lines (ILs) with HHZ as the parent, which contained the above-mentioned nine genes. This might imply that these ILs have the potential to improve the tolerance to drought and salt. In this paper, we focus on the relationship of drought and salt co-response gene gcHaps and their related pathways using a novel angle. The haplotype network will be helpful to explore the desired haplotypes that can be implemented in haplotype-based breeding programs.

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Gene Mapping, Cloning and Association Analysis for Salt Tolerance in Rice

Cited by 19 publications

References 105 publications

Comparative Transcriptome Analysis of Two Sweet Sorghum Genotypes with Different Salt Tolerance Abilities to Reveal the Mechanism of Salt Tolerance

Comparative Transcriptome Analysis of Two Sweet Sorghum Genotypes with Different Salt Tolerance Abilities to Reveal the Mechanism of Salt Tolerance

Improvement of Salinity Tolerance in Water-Saving and Drought-Resistance Rice (WDR)

Candidate Genes and Pathways in Rice Co-Responding to Drought and Salt Identified by gcHap Network

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