Characterization of SWEET family members from loquat and their responses to exogenous induction

Wu, Yiwan; Wang, Yanpeng; Shan, Youxia; Qin, Qiaoping

doi:10.1007/s11295-017-1200-6

Cited by 7 publications

(6 citation statements)

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“…Genome-wide identification and analysis of SWEET gene family have been reported in various plant species, such as Arabidopsis thaliana [5], Oryza sativa [23], Vitis vinifera [11], Malus domestica [24], Citrus sinensis [25], Solanum lycopersicum [26], Glycine max [27], Brassica napus [28], S. tuberosum [29], Sorghum bicolor [30], Pyrus bretschneideri [31], Cucumis sativus [32], Musa acuminate [33], Hevea brasiliensis [34], Eriobotrya japonica [35], Camellia sinensis [18], B. oleracea [19], Ananas comosus [21], Triticum aestivum [36], B. rapa [37], Phalaenopsis equestris and Dendrobium officinale [38]. In Arabidopsis, the 17 SWEET genes were classified into four clades according to the phylogenetic analysis: AtSWEET1–3 (Clade I), AtSWEET4–8 (Clade II), AtSWEET9–15 (Clade III), and AtSWEET16–17 (Clade IV) [5].…”

Section: Introductionmentioning

confidence: 99%

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Genome-wide identification and expression analysis of SWEET gene family in Litchi chinensis reveal the involvement of LcSWEET2a/3b in early seed development

et al. 2019

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BackgroundSWEETs (Sugar Will Eventually be Exported transporters) function as sugar efflux transporters that perform diverse physiological functions, including phloem loading, nectar secretion, seed filling, and pathogen nutrition. The SWEET gene family has been identified and characterized in a number of plant species, but little is known about in Litchi chinensis, which is an important evergreen fruit crop.ResultsIn this study, 16 LcSWEET genes were identified and nominated according to its homologous genes in Arabidopsis and grapevine. Multiple sequence alignment showed that the 7 alpha-helical transmembrane domains (7-TMs) were basically conserved in LcSWEETs. The LcSWEETs were divided into four clades (Clade I to Clade IV) by phylogenetic tree analysis. A total of 8 predicted motifs were detected in the litchi LcSWEET genes. The 16 LcSWEET genes were unevenly distributed in 9 chromosomes and there was one pairs of segmental duplicated events by synteny analysis. The expression patterns of the 16 LcSWEET genes showed higher expression levels in reproductive organs. The temporal and spatial expression patterns of LcSWEET2a and LcSWEET3b indicated they play central roles during early seed development.ConclusionsThe litchi genome contained 16 SWEET genes, and most of the genes were expressed in different tissues. Gene expression suggested that LcSWEETs played important roles in the growth and development of litchi fruits. Genes that regulate early seed development were preliminarily identified. This work provides a comprehensive understanding of the SWEET gene family in litchi, laying a strong foundation for further functional studies of LcSWEET genes and improvement of litchi fruits.

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Section: Introductionmentioning

confidence: 99%

“…The SWEET genes in each clade may have similar functions, although they are versatile in different plants. At present, several SWEET genes have been identified in fruit trees [24, 25, 31, 35, 39], but their functions in fruit development are not clear.…”

Section: Introductionmentioning

confidence: 99%

Genome-wide identification and expression analysis of SWEET gene family in Litchi chinensis reveal the involvement of LcSWEET2a/3b in early seed development

et al. 2019

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“…A genome‐wide survey of SWEET genes has been undertaken in >30 species (Table S1 ). The number of SWEET genes in these species varies from as low as 7 in the loquat fruit tree ( Eriobotrya japonica ; Wu et al, 2017 ) to as high as 108 in hexaploid wheat ( Triticum aestivum ; Gautam et al, 2019 ). Based on phylogeny, SWEET proteins in plants are classified into four clades.…”

Section: Sweet Genes In Plantsmentioning

confidence: 99%

SWEET genes and TAL effectors for disease resistance in plants: Present status and future prospects

Gupta

Balyan

2021

Molecular Plant Pathology

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Plant diseases in different crops cause an average global yield loss to the tune of approximately 16%, which can sometimes reach up to 40% to 50% in individual crops (Oerke, 2006;Savary et al., 2019). In view of this, the development of cultivars that are resistant to major diseases (including viral, bacterial, and fungal diseases) has been a priority area of research for crop breeding (Bailey-Serres et al., 2019). During the last three decades (starting in the early 1990s), the molecular basis of plant immunity has also been extensively studied, and the genes imparting resistance have been identified, cloned, and characterized in many cases (Kourelis & van der Hoorn, 2018).As a result, the following two layers of plant immunity have been characterized: (a) pathogen-/microbe-/damage-associated molecular

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“…In this study, we identified and characterized SWEET genes in Carambola, comparing it with its homologous genes in Arabidopsis and grapevine, and transcriptome annotation information. Previous studies have reported that in higher plants, the number of reported SWEET genes varied from 7 to 108 and were found 17 in Arabidopsis (Chen et al, 2010), 17 in grapevine (Chong et al, 2014), 21 in rice (Yuan & Wang, 2013), 16 in litchi (Xie et al, 2019), 7 in loquat (Wu et al, 2017), and 108 in wheat (Gautam et al, 2019). In this study, we isolated 10 AcSWEET genes from the Carambola fruit, containing 229 aa to 300 aa, consistent with studies in other plants, such as 183-305 aa in loquat (Wu et al, 2017), 229-300 aa in litchi (Xie et al, 2019), 233-308 aa in tomato (Feng et al, 2015), 171-333 aa in banana (Miao et al, 2017), and 215-340 aa in apple (Zhen et al, 2018).…”

Section: Acsweet Gene Family In Carambolamentioning

confidence: 99%

“…The SWEET genes belonging to a specific clade may perform similar functions, although they might be different in plants. Previous studies have identified the SWEET sugar transporters in several plants, including Arabidopsis (Chen et al, 2010), rice (Yuanet al, 2013), and several fruit-bearing trees, such as orange (Zheng et al, 2014), grape (Chong et al, 2014), apple (Wei et al, 2014), pear (Li et al, 2017), loquat (Wu et al, 2017), litchi (Xie et al, 2019), and pineapple (Guo et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Identification and functional analysis of SWEET gene family in Averrhoa carambola L. fruits during ripening

Lin

Zhong

Zhang

2021

PeerJ

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Sugar Will Eventually be Exported Transporters (SWEETs), a type of sugar efflux transporters, have been extensively researched upon due to their role in phloem loading for distant sugar transport, fruit development, and stress regulation, etc. Several plant species are known to possess the SWEET genes; however, little is known about their presence in Averrhoa Carambola L. (Oxalidaceae), an evergreen fruit crop (star fruit) in tropical and subtropical regions of Southeast Asia. In this study, we established an Averrhoa Carambola L. unigenes library from fruits of ‘XianMiyangtao’ (XM) by RNA sequencing (RNA-seq). A total of 99,319 unigenes, each longer than 200 bp with a total length was 72.00 Mb, were identified. A total of 51,642 unigenes (52.00%) were annotated. Additionally, 10 AcSWEET genes from the Averrhoa Carambola L. unigenes library were identified and classified, followed by a comprehensive analysis of their structures and conserved motif compositions, and evolutionary relationships. Moreover, the expression patterns of AcSWEETs in ‘XM’ cultivars during fruit ripening were confirmed using quantitative real-time PCR (qRT-PCR), combined with the soluble sugar and titratable acids content during ripening, showed that AcSWEET2a/2b and AcSWEET16b might participate in sugar transport during fruit ripening. This work presents a general profile of the AcSWEET gene family in Averrhoa Carambola L., which can be used to perform further studies on elucidating the functional roles of AcSWEET genes.

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Characterization of SWEET family members from loquat and their responses to exogenous induction

Cited by 7 publications

References 37 publications

Genome-wide identification and expression analysis of SWEET gene family in Litchi chinensis reveal the involvement of LcSWEET2a/3b in early seed development

Genome-wide identification and expression analysis of SWEET gene family in Litchi chinensis reveal the involvement of LcSWEET2a/3b in early seed development

SWEET genes and TAL effectors for disease resistance in plants: Present status and future prospects

Identification and functional analysis of SWEET gene family in Averrhoa carambola L. fruits during ripening

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