Natural variations in <i>SlSOS1</i> contribute to the loss of salt tolerance during tomato domestication

Wang, Zhen; Hong, Yechun; Li, Yumei; Shi, Huazhong; Yao, Juanjuan; Li, Xue; Wang, Fuxing; Huang, Sanwen; Zhu, Guangtao; Zhu, Jian‐Kang

doi:10.1111/pbi.13443

Cited by 54 publications

(41 citation statements)

References 10 publications

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“…The exception to this is seen with crops in Caryophyllales, such as Beta vulgaris, Salicornia bigelovii, and Spinacia oleracea (Choo et al., 2001 ; Wu et al., 2013 ; Yamada et al., 2016 ). Recent studies have illustrated how crop species have lost traits related to salt tolerance their ancestral wild relatives had before domestication (Quan et al., 2018 ; Rozema et al., 2015 ; Wang et al., 2020 , 2021 ).…”

Section: Discussionmentioning

confidence: 99%

No escape: The influence of substrate sodium on plant growth and tissue sodium responses

Santiago‐Rosario

Harms

Elderd

et al. 2021

Ecology and Evolution

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Section: Discussionmentioning

confidence: 99%

No escape: The influence of substrate sodium on plant growth and tissue sodium responses

Santiago‐Rosario

Harms

Elderd

et al. 2021

Ecology and Evolution

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“…Previous studies have demonstrated that high concentrations of soil salts damage crops by causing ion (mainly sodium (Na + )) toxicity and osmotic stress (Ren et al ., 2005; Munns & Tester, 2008), hence the identifications of QTLs associated with Na + homeostasis and the tolerance to salt‐induced osmotic stress (SIOS) are the key tasks of improving crop salt tolerance. However, whilst decades of effort have identified a number of salt‐tolerant QTLs regulating Na + homeostasis in maize and other cops (Ren et al ., 2005; Munns et al ., 2012; Yang et al ., 2014; Zhang et al ., 2018; Wang et al ., 2021), the QTLs underlying the natural variation of SIOS tolerance in major crops (including maize) remain poorly understood, largely as a consequence of the complexity of SIOS response and the difficulty of quantifying SIOS tolerance (Munns & Tester, 2008; Ismail & Horie, 2017). To overcome these difficulties, the development of accurate phenotyping methods and sophisticated gene mining strategies are highly desirable.…”

Section: Introductionmentioning

confidence: 99%

Metabolomics‐driven gene mining and genetic improvement of tolerance to salt‐induced osmotic stress in maize

et al. 2021

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Summary The farmland of the world’s main corn‐producing area is increasingly affected by salt stress. Therefore, the breeding of salt‐tolerant cultivars is necessary for the long‐term sustainability of global corn production. Previous studies have shown that natural maize varieties display a large diversity of salt tolerance, yet the genetic variants underlying such diversity remain poorly discovered and applied, especially those mediating the tolerance to salt‐induced osmotic stress (SIOS). Here we report a metabolomics‐driven understanding and genetic improvement of maize SIOS tolerance. Using a LC‐MS‐based untargeted metabolomics approach, we profiled the metabolomes of 266 maize inbred lines under control and salt conditions, and then identified 37 metabolite biomarkers of SIOS tolerance (METO1‐37). Follow‐up metabolic GWAS (mGWAS) and genotype‐to‐phenotype modeling identified 10 candidate genes significantly associating with the SIOS tolerance and METO abundances. Furthermore, we validated that a citrate synthase, a glucosyltransferase and a cytochrome P450 underlie the genotype–METO–SIOS tolerance associations, and showed that their favorable alleles additively improve the SIOS tolerance of elite maize inbred lines. Our study provides a novel insight into the natural variation of maize SIOS tolerance, which boosts the genetic improvement of maize salt tolerance, and demonstrates a metabolomics‐based approach for mining crop genes associated with this complex agronomic trait.

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“…During domestication, selection can lead to the loss of genetic diversity ( Doebley et al, 2006 ), and indirect effects of domestication may have led to the loss of particular stress tolerance traits including drought tolerance ( Yu et al, 2008 ; Zhu et al, 2019 ; Wang et al, 2020b , a ). In the same manner as drought adaptations above, domestication statuses for the same sets of plant species were assigned which were exclusively sourced from the genome paper of each plant genome.…”

Section: Resultsmentioning

confidence: 99%

Evolutionary Origins of Drought Tolerance in Spermatophytes

2021

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It is commonly known that drought stress is a major constraint limiting crop production. Drought stress and associated drought tolerance mechanisms are therefore under intense investigation with the view to future production of drought tolerant crops. With an ever-growing population and variable climate, novel approaches need to be considered to sustainably feed future generations. In this context, definitions of drought tolerance are highly variable, which poses a major challenge for the systematic assessment of this trait across the plant kingdom. Furthermore, drought tolerance is a polygenic trait and understanding the evolution of this complex trait may inform us about patterns of gene gain and loss in relation to diverse drought adaptations. We look at the transition of plants from water to land, and the role of drought tolerance in enabling this transition, before discussing the first drought tolerant plant and common drought responses amongst vascular plants. We reviewed the distribution of a combined “drought tolerance” trait in very broad terms to encompass different experimental systems and definitions used in the current literature and assigned a binary trait “tolerance vs. sensitivity” in 178 extant plant species. By simplifying drought responses of plants into this “binary” trait we were able to explore the evolution of drought tolerance across the wider plant kingdom, compared to previous studies. We show how this binary “drought tolerance/sensitivity” trait has evolved and discuss how incorporating this information into an evolutionary genomics framework could provide insights into the molecular mechanisms underlying extreme drought adaptations.

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Natural variations in SlSOS1 contribute to the loss of salt tolerance during tomato domestication

Cited by 54 publications

References 10 publications

No escape: The influence of substrate sodium on plant growth and tissue sodium responses

No escape: The influence of substrate sodium on plant growth and tissue sodium responses

Metabolomics‐driven gene mining and genetic improvement of tolerance to salt‐induced osmotic stress in maize

Evolutionary Origins of Drought Tolerance in Spermatophytes

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