Systematic Genome-Wide Study and Expression Analysis of SWEET Gene Family: Sugar Transporter Family Contributes to Biotic and Abiotic Stimuli in Watermelon

Xuan, Changqing; Lan, Guangpu; Si, Fengfei; Zeng, Zhilong; Wang, Chunxia; Yadav, Vivek; Wei, Chunhua; Zhang, Xian

doi:10.3390/ijms22168407

Cited by 23 publications

(22 citation statements)

References 63 publications

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“…Ten CsSWEETs, including CsSWEET5a , - 3a , - 9a , - 7b , - 17a , - 9b , - 15c , - 10c , - 1b and - 5c , were highly expressed in one or several pollen stages of tea ( Camellia sinensis ) [ 72 ]. Most SWEET genes of watermelon showed high expression levels in male flowers [ 73 ]. During the petunia flower development, the expression level of PaSWEET13c , - 9a , - 1d , - 5a and - 14a increases with the maturation of the flower [ 74 ].…”

Section: Sweets Are Involved In Plant Growth and Developmentmentioning

confidence: 99%

Plant SWEET Family of Sugar Transporters: Structure, Evolution and Biological Functions

Yang

Fang

et al. 2022

Biomolecules

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The SWEET (sugars will eventually be exported transporter) family was identified as a new class of sugar transporters that function as bidirectional uniporters/facilitators and facilitate the diffusion of sugars across cell membranes along a concentration gradient. SWEETs are found widely in plants and play central roles in many biochemical processes, including the phloem loading of sugar for long-distance transport, pollen nutrition, nectar secretion, seed filling, fruit development, plant–pathogen interactions and responses to abiotic stress. This review focuses on advances of the plant SWEETs, including details about their discovery, characteristics of protein structure, evolution and physiological functions. In addition, we discuss the applications of SWEET in plant breeding. This review provides more in-depth and comprehensive information to help elucidate the molecular basis of the function of SWEETs in plants.

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Section: Sweets Are Involved In Plant Growth and Developmentmentioning

confidence: 99%

Plant SWEET Family of Sugar Transporters: Structure, Evolution and Biological Functions

Yang

Fang

et al. 2022

Biomolecules

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“…Chen and colleagues 69 identified and characterized several LEA family genes conferring tolerance to multiple environmental stresses 69 . (ii) In a recent study, Xuan and colleagues 70 reported that a higher expression level of sugar transporter genes regulates plant responses to different stresses, including drought, salt, and low-temperature stress. (iii) Transgenic plants with increased expression of the WSD1 gene, which encodes for wax synthase/acyl-CoA:diacylglycerol acyltransferase showed improved tolerance to abscisic acid, mannitol, drought, and salinity 71 .…”

Section: Discussionmentioning

confidence: 99%

Consensus genomic regions associated with multiple abiotic stress tolerance in wheat and implications for wheat breeding

Tanin

Saini

Sandhu

et al. 2022

Preprint

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In wheat, a meta-analysis was performed using previously identified QTLs associated with drought stress, heat stress, salinity stress, water-logging stress, pre-harvest sprouting, and aluminium stress which predicted a total of 134 meta-QTLs (MQTLs) that involved at least 28 consistent and stable MQTLs conferring tolerance to five or all six abiotic stresses under study. Seventy-six MQTLs out of the 132 physically anchored MQTLs were also verified with genome-wide association studies. Around 43% of MQTLs had genetic and physical confidence intervals of less than 1 cM and 5 Mb, respectively. Consequently, 539 genes were identified in some selected MQTLs providing tolerance to 5 or all 6 abiotic stresses. Comparative analysis of genes underlying MQTLs with four RNA-seq based transcriptomic datasets unravelled a total of 191 differentially expressed genes which also included at least 11 most promising candidate genes common among different datasets. The promoter analysis showed that the promoters of these genes include many stress responsiveness cis-regulatory elements, such as ARE, MBS, TC-rich repeats, As-1 element, STRE, LTR, WRE3, and WUN-motif among others. Further, some MQTLs also overlapped with as many as 34 known abiotic stress tolerance genes. In addition, numerous ortho-MQTLs among the wheat, maize, and rice genomes were discovered. These findings could help with fine mapping and gene cloning, as well as marker-assisted breeding for multiple abiotic stress tolerances in wheat.

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“…To date, the genome-wide analysis of SWEET genes has been comprehensively conducted in several plant species, such as A. thaliana [ 9 ], rice ( Oryza sativa ) [ 13 ], lychee ( Litchi chinensis Sonn) [ 16 ], and pomegranate ( Punica granatum ) [ 17 ]. Biochemical and functional analyses have shown that SWEET genes are involved in many different functions, such as phloem loading [ 9 ], nectar secretion [ 18 ], pollen development [ 19 ], modulating gibberellins response [ 20 ], senescence [ 21 ], abiotic stress response [ 22 , 23 , 24 , 25 , 26 , 27 ], host–pathogen interactions [ 28 , 29 , 30 , 31 ], and seed and fruit development [ 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of the SWEET Gene Family in Longan (Dimocarpus longan) and the Role of DlSWEET1 in Cold Tolerance

Fang

Rao

Wang

et al. 2022

IJMS

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Sugars will eventually be exported transporters (SWEET), a group of relatively novel sugar transporters, that play important roles in phloem loading, seed and fruit development, pollen development, and stress response in plants. Longan (Dimocarpus longan), a subtropic fruit tree with high economic value, is sensitive to cold. However, whether the SWEET gene family plays a role in conferring cold tolerance upon longan remains unknown. Here, a total of 20 longan SWEET (DlSWEET) genes were identified, and their phylogenetic relationships, gene structures, cis-acting elements, and tissue-specific expression patterns were systematically analyzed. This family is divided into four clades. Gene structures and motifs analyses indicated that the majority of DlSWEETs in each clade shared similar exon–intron organization and conserved motifs. Tissue-specific gene expression suggested diverse possible functions for DlSWEET genes. Cis-elements analysis and quantitative real-time PCR (qRT-PCR) analysis revealed that DlSWEET1 responded to cold stress. Notably, the overexpression of DlSWEET1 improved cold tolerance in transgenic Arabidopsis, suggesting that DlSWEET1 might play a positive role in D. longan’s responses to cold stress. Together, these results contribute to a better understanding of SWEET genes, which could serve as a foundation for the further functional identification of these genes.

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Systematic Genome-Wide Study and Expression Analysis of SWEET Gene Family: Sugar Transporter Family Contributes to Biotic and Abiotic Stimuli in Watermelon

Cited by 23 publications

References 63 publications

Plant SWEET Family of Sugar Transporters: Structure, Evolution and Biological Functions

Plant SWEET Family of Sugar Transporters: Structure, Evolution and Biological Functions

Consensus genomic regions associated with multiple abiotic stress tolerance in wheat and implications for wheat breeding

Characterization of the SWEET Gene Family in Longan (Dimocarpus longan) and the Role of DlSWEET1 in Cold Tolerance

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