文献类型： 外文期刊
作者： Fakher, Beenish 1 ; Ashraf, M. Arif 3 ; Wang, Lulu 1 ; Wang, Xiaomei 4 ; Zheng, Ping 2 ; Aslam, Mohammad 2 ; Qin, Yuan 2 ;
作者机构： 1.Guangxi Univ, Coll Agr, State Key Lab Conservat & Utilizat Subtrop Agrobio, Guangxi Key Lab Sugarcane Biol, Nanning 530004, Guangxi, Peoples R China
2.Fujian Agr & Forestry Univ, Coll Life Sci, Key Lab Genet Breeding & Multiple Utilizat Crops, Coll Agr,Minist Educ,Fujian Prov Key Lab Haixia Ap, Fuzhou 350002, Fujian, Peoples R China
3.Howard Univ, Dept Biol, Washington, DC 20059 USA
4.Guangxi Acad Agr Sci, Hort Res Inst, Nanning Invest Stn South Subtrop Fruit Trees, Minist Agr, Nanning 530004, Peoples R China
5.Donald Danforth Plant Sci Ctr, St Louis, MO 63132 USA
期刊名称：HORTICULTURE RESEARCH （ 影响因子：8.7； 五年影响因子：9.0 ）
ISSN： 2662-6810
年卷期： 2023 年 10 卷 10 期
页码：
收录情况： SCI
摘要： SWEET transporters are a unique class of sugar transporters that play vital roles in various developmental and physiological processes in plants. While the functions of SWEETs have been well established in model plants such as Arabidopsis, their functions in economically important fruit crops like pineapple have not been well studied. Here we aimed to investigate the substrate specificity of pineapple SWEETs by comparing the protein sequences of known glucose and sucrose transporters in Arabidopsis with those in pineapple. Our genome-wide approach and 3D structure comparison showed that the Arabidopsis SWEET8 homolog in pineapple, AcSWEET10, shares similar sequences and protein properties responsible for glucose transport. To determine the functional conservation of AcSWEET10, we tested its ability to complement glucose transport mutants in yeast and analyzed its expression in stamens and impact on the microspore phenotype and seed set in transgenic Arabidopsis. The results showed that AcSWEET10 is functionally equivalent to AtSWEET8 and plays a critical role in regulating microspore formation through the regulation of the Callose synthase5 (CalS5), which highlights the importance of SWEET transporters in pineapple. This information could have important implications for improving fruit crop yield and quality by manipulating SWEET transporter activity.
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