Tonoplast Inositol Transporters: Roles in Plant Abiotic Stress Response and Crosstalk with Other Signals

Zhou, Ying; Ic, Kue Foka; H, Li

doi:10.20944/preprints202106.0515.v1

Cited by 2 publications

(2 citation statements)

References 94 publications

(124 reference statements)

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“…INT1 transports myo -inositol from the vacuole into the cytoplasm in A. thaliana ( Schneider et al., 2008 ; Strobl et al., 2018 ). Inositol transporters and myo -inositol have important roles in various signaling pathways in plants ( Valluru and Van den Ende, 2011 ; Zhou et al., 2021 ). The methylated derivatives of myo-inositol (e.g.…”

Section: Discussionmentioning

confidence: 99%

A genome-wide association study of freezing tolerance in red clover (Trifolium pratense L.) germplasm of European origin

et al. 2023

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Improvement of persistency is an important breeding goal in red clover (Trifolium pratense L.). In areas with cold winters, lack of persistency is often due to poor winter survival, of which low freezing tolerance (FT) is an important component. We conducted a genome wide association study (GWAS) to identify loci associated with freezing tolerance in a collection of 393 red clover accessions, mostly of European origin, and performed analyses of linkage disequilibrium and inbreeding. Accessions were genotyped as pools of individuals using genotyping-by-sequencing (pool-GBS), generating both single nucleotide polymorphism (SNP) and haplotype allele frequency data at accession level. Linkage disequilibrium was determined as a squared partial correlation between the allele frequencies of pairs of SNPs and found to decay at extremely short distances (< 1 kb). The level of inbreeding, inferred from the diagonal elements of a genomic relationship matrix, varied considerably between different groups of accessions, with the strongest inbreeding found among ecotypes from Iberia and Great Britain, and the least found among landraces. Considerable variation in FT was found, with LT50-values (temperature at which 50% of the plants are killed) ranging from -6.0°C to -11.5°C. SNP and haplotype-based GWAS identified eight and six loci significantly associated with FT (of which only one was shared), explaining 30% and 26% of the phenotypic variation, respectively. Ten of the loci were found within or at a short distance (<0.5 kb) from genes possibly involved in mechanisms affecting FT. These include a caffeoyl shikimate esterase, an inositol transporter, and other genes involved in signaling, transport, lignin synthesis and amino acid or carbohydrate metabolism. This study paves the way for a better understanding of the genetic control of FT and for the development of molecular tools for the improvement of this trait in red clover through genomics assisted breeding.

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Section: Discussionmentioning

confidence: 99%

A genome-wide association study of freezing tolerance in red clover (Trifolium pratense L.) germplasm of European origin

et al. 2023

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“…In recent decades, there have been many attempts to improve response to environmental constraints by producing transgenic plants with modified sugar metabolism, transport or signalling (Pérez‐Díaz et al, 2021; Rodriguez et al, 2019; Sarkar & Sadhukhan, 2022). Significantly, the manipulation of sugar exchanges between cytosol and vacuole by targeting sugar metabolism or sugar transport has been proven to be essential for plant development and response to abiotic stresses (Chen et al, 2022; Feng et al, 2021; Qian et al, 2018; Saddhe et al, 2021; Valifard et al, 2021; Vu et al, 2020; Zhou et al, 2022). Despite the identification of numerous tonoplast sugar transporters, a functional characterisation for most of them is still missing.…”

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confidence: 99%