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Identification and molecular characterization of an IDA-like gene from litchi, LcIDL1, whose ectopic expression promotes floral organ abscission in Arabidopsis.
Ying, Peiyuan; Li, Caiqin; Liu, Xuncheng; Xia, Rui; Zhao, Minglei; Li, Jianguo.
Affiliation
  • Ying P; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, China Litchi Research Center, South China Agricultural University, Guangzhou, 510642, China.
  • Li C; Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China.
  • Liu X; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, China Litchi Research Center, South China Agricultural University, Guangzhou, 510642, China.
  • Xia R; Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China.
  • Zhao M; Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
  • Li J; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, China Litchi Research Center, South China Agricultural University, Guangzhou, 510642, China.
Sci Rep ; 6: 37135, 2016 11 15.
Article de En | MEDLINE | ID: mdl-27845425
Unexpected abscission of flowers or fruits is a major limiting factor for crop productivity. Key genes controlling abscission in plants, especially in popular fruit trees, are largely unknown. Here we identified a litchi (Litchi chinensis Sonn.) IDA-like (INFLORESCENCE DEFICIENT IN ABSCISSION-like) gene LcIDL1 as a potential key regulator of abscission. LcIDL1 encodes a peptide that shows the closest homology to Arabidopsis IDA, and is localized in cell membrane and cytoplasm. Real-time PCR analysis showed that the expression level of LcIDL1 accumulated gradually following flower abscission, and it was obviously induced by fruit abscission-promoting treatments. Transgenic plants expressing LcIDL1 in Arabidopsis revealed a role of LcIDL1 similar to IDA in promoting floral organ abscission. Moreover, ectopic expression of LcIDL1 in Arabidopsis activated the expression of abscission-related genes. Taken together, our findings provide evidence that LcIDL1 may act as a key regulator in control of abscission.
Sujet(s)

Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Sujet principal: Protéines végétales / Végétaux génétiquement modifiés / Arabidopsis / Régulation de l'expression des gènes végétaux / Litchi / Fleurs / Protéines membranaires Type d'étude: Diagnostic_studies / Prognostic_studies Langue: En Journal: Sci Rep Année: 2016 Type de document: Article Pays d'affiliation: Chine Pays de publication: Royaume-Uni

Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Sujet principal: Protéines végétales / Végétaux génétiquement modifiés / Arabidopsis / Régulation de l'expression des gènes végétaux / Litchi / Fleurs / Protéines membranaires Type d'étude: Diagnostic_studies / Prognostic_studies Langue: En Journal: Sci Rep Année: 2016 Type de document: Article Pays d'affiliation: Chine Pays de publication: Royaume-Uni