A novel sucrose transporter gene IbSUT4 involves in plant growth and response to abiotic stress through the ABF-dependent ABA signaling pathway in Sweetpotato

Wang, Dandan; Liu, Hongjuan; Wang, Hongxia; Zhang, Peng; Shi, Chunyu

doi:10.1186/s12870-020-02382-8

Cited by 41 publications

(28 citation statements)

References 64 publications

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“…Sucrose transporter SUT4 was also showed to be associated to NDG as its involvement in germination was reported previously (Siao et al 2011;. Overexpression of this gene has been shown to increase susceptibility to ABA during seed incubation (Wang et al 2020).…”

Section: Associated Genes With Ndgsupporting

confidence: 58%

Genome-wide association study (GWAS) of seed germination-related traits in rice and identification of candidate genes

Panhabadi¹,

Ahmadikhah²,

Farokhi³

et al. 2021

Preprint

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Background Genome-wide association study (GWAS) has become an accepted and powerful method for understanding the associations between phenotypes and genotypes. In agricultural production, uniform and rapid germination is an important prerequisite in crop production. Here, a rice (Oryza sativa L.) GWAS with 33,934 SNPs (MAF > 0.05) for eight germination traits including germination percentage (GP), shoot (SL) and root length (RL), root (RFW) and shoot fresh weight (SFW), root (RDW) and shoot (SDW) dry weight, and number of days to germinate (NDG) was performed to define genomic regions influencing seed germination. Results Loci (43) with 70 significant germination-associated markers were detected across all rice chromosomes. Some of novel candidate associated genes were: LOC_Os01g26210 (OsWAK6) co-located with qGR-1 that is seed vigor QTL, LOC_Os07g23944 (GH31) with an α-glucosidases /starch lyase activity; id7000519 marker that corresponds to a gene cluster containing glutathione S-transferase and glucan endo-1,3-β-glucosidase co-located with qAG3 germination-related marker, LOC_Os06g47640 (calmodulin-related calcium sensor protein 29) involved in the inhibition of ABA during seed germination, and id4006430 marker that corresponds to a gene cluster containing three GH17 hydrolytic enzyme that are co-located with qHD4 and qGI1 markers. Conclusion The germination process is an initial and important step in the production of agricultural products, especially for rice, which is a crop plant that is grown in flooded lands. Here, the genetic diversity of rice genotypes was put under scrutiny for germination. Our GWAS results identified several likely candidate genes for germination traits that will greatly contribute to our understanding of the genetic complexity underlying the corresponding traits. The associated genes with the germination traits can be generally classified as hydrolytic enzymes and regulatory proteins that can directly or indirectly influence germination.

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Section: Associated Genes With Ndgsupporting

confidence: 58%

Genome-wide association study (GWAS) of seed germination-related traits in rice and identification of candidate genes

Panhabadi¹,

Ahmadikhah²,

Farokhi³

et al. 2021

Preprint

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“…In this way, the accumulation of sucrose in sink tissues increases, resulting in a decreased hexose-to-sucrose ratio. In addition, drought stress increases the expression and the activities of acid invertase enzymes in the leaves, leading to irreversible hydrolysis into glucose and fructose [ 59 , 60 ].…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, starch degradation was also observed in sitiens mutant exposed to salt stress [ 46 ]. The accumulation of soluble sugars, such as sucrose, glucose and fructose, in flacca source leaf was the result of decreased transport of photosynthates to the sink tissues by ABA-mediated mechanisms of growth inhibition ( Figure 2 ) [ 60 ]. To unravel the mechanism of source-sink transportation of sucrose in flacca , future work on carbon allocation in the whole plant, as well as the expression level of sucrose transporters is required.…”

Section: Discussionmentioning

confidence: 99%

Leaf Soluble Sugars and Free Amino Acids as Important Components of Abscisic Acid—Mediated Drought Response in Tomato

Živanović

Komić

Tosti

et al. 2020

Plants

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Water deficit has a global impact on plant growth and crop yield. Climate changes are going to increase the intensity, duration and frequency of severe droughts, particularly in southern and south-eastern Europe, elevating the water scarcity issues. We aimed to assess the contribution of endogenous abscisic acid (ABA) in the protective mechanisms against water deficit, including stomatal conductance, relative water potential and the accumulation of osmoprotectants, as well as on growth parameters. To achieve that, we used a suitable model system, ABA-deficient tomato mutant, flacca and its parental line. Flacca mutant exhibited constitutively higher levels of soluble sugars (e.g., galactose, arabinose, sorbitol) and free amino acids (AAs) compared with the wild type (WT). Water deficit provoked the strong accumulation of proline in both genotypes, and total soluble sugars only in flacca. Upon re-watering, these osmolytes returned to the initial levels in both genotypes. Our results indicate that flacca compensated higher stomatal conductance with a higher constitutive level of free sugars and AAs. Additionally, we suggest that the accumulation of AAs, particularly proline and its precursors and specific branched-chain AAs in both, glucose and sucrose in flacca, and sorbitol in WT, could contribute to maintaining growth rate during water deficit and recovery in both tomato genotypes.

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“…The SUT members AtSUT2 and AtSUT4 are involved in sucrose phloem loading and respond to abiotic stress through an ABA‐responsive element (ABRF) and ABRF binding factor (ABF)‐dependent ABA signaling pathway and a sucrose signaling pathway (Gong et al, 2015). Moreover, the ABF‐dependent ABA signaling pathway may regulate the expression of various SUT members ( AtSUT , IbSUT4 , PtaSUT4 , and MdSUT2 ) in plants under abiotic stress (Wang et al, 2020) (Figure 4). In Malus domestica , the ABA‐responsive transcription factor MdAREB2 induces the expression of amylase and sugar transporter genes to promote soluble sugars' accumulation, suggesting that ABA regulates sugar accumulation in plants (Ma et al, 2017).…”

Section: The Interplay Between Sugars and Phytohormones Under Abioticmentioning

confidence: 99%

Plant sugars: Homeostasis and transport under abiotic stress in plants

Saddhe

Manuka

Suprasanna

2020

Physiologia Plantarum

190

105

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The sessile nature of plants' life is endowed with a highly evolved defense system to adapt and survive under environmental extremes. To combat such stresses, plants have developed complex and well‐coordinated molecular and metabolic networks encompassing genes, metabolites, and acclimation responses. These modulate growth, photosynthesis, osmotic maintenance, and carbohydrate homeostasis. Under a given stress condition, sugars act as key players in stress perception, signaling, and are a regulatory hub for stress‐mediated gene expression ensuring responses of osmotic adjustment, scavenging of reactive oxygen species, and maintaining the cellular energy status through carbon partitioning. Several sugar transporters are known to regulate carbohydrate partitioning and key signal transduction steps involved in the perception of biotic and abiotic stresses. Sugar transporters such as SUGARS WILL EVENTUALLY BE EXPORTED TRANSPORTER (SWEETs), SUCROSE TRANSPORTERS (SUTs), and MONOSACCHARIDE TRANSPORTERS (MSTs) are involved in sugar loading and unloading as well as long‐distance transport (source to sink) besides orchestrating oxidative and osmotic stress tolerance. It is thus necessary to understand the structure–function relationship of these sugar transporters to fine‐tune the abiotic stress‐modulated responses. Advances in genomics have unraveled many sugars signaling components playing a key role in cross‐talk in abiotic stress pathways. An integrated omics approach may aid in the identification and characterization of sugar transporters that could become targets for developing stress tolerance plants to mitigate climate change effects and improve crop yield. In this review, we have presented an up‐to‐date analysis of the sugar homeostasis under abiotic stresses as well as describe the structure and functions of sugar transporters under abiotic stresses.

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A novel sucrose transporter gene IbSUT4 involves in plant growth and response to abiotic stress through the ABF-dependent ABA signaling pathway in Sweetpotato

Cited by 41 publications

References 64 publications

Genome-wide association study (GWAS) of seed germination-related traits in rice and identification of candidate genes

Genome-wide association study (GWAS) of seed germination-related traits in rice and identification of candidate genes

Leaf Soluble Sugars and Free Amino Acids as Important Components of Abscisic Acid—Mediated Drought Response in Tomato

Plant sugars: Homeostasis and transport under abiotic stress in plants

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