Xyloglucan endotransglucosylase/hydrolase genes LcXTH4 /7/19 are involved in fruitlet abscission and are activated by LcEIL2 /3 in litchi

2021 ◽  
Author(s):  
Xingshuai Ma ◽  
Caiqin Li ◽  
Ye Yuan ◽  
Minglei Zhao ◽  
Jianguo Li
Keyword(s):  
Fruitlet Abscission

scholarly journals Characterization of Two Ethephon-Induced IDA-Like Genes from Mango, and Elucidation of Their Involvement in Regulating Organ Abscission

Genes ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 439
Author(s):  
Avinash Chandra Rai ◽  
Eyal Halon ◽  
Hanita Zemach ◽  
Tali Zviran ◽  
Isaac Sisai ◽  
...  
Keyword(s):  
Expression Profiles ◽  
Mangifera Indica ◽  
Ectopic Expression ◽  
Fruit Trees ◽  
Floral Organ ◽  
Cytosolic Ph ◽  
Early Increase ◽  
Encoding Genes ◽  
Fruitlet Abscission

In mango (Mangifera indica L.), fruitlet abscission limits productivity. The INFLORESCENCE DEFICIENT IN ABSCISSION (IDA) peptide acts as a key component controlling abscission events in Arabidopsis. IDA-like peptides may assume similar roles in fruit trees. In this study, we isolated two mango IDA-like encoding-genes, MiIDA1 and MiIDA2. We used mango fruitlet-bearing explants and fruitlet-bearing trees, in which fruitlets abscission was induced using ethephon. We monitored the expression profiles of the two MiIDA-like genes in control and treated fruitlet abscission zones (AZs). In both systems, qRT-PCR showed that, within 24 h, both MiIDA-like genes were induced by ethephon, and that changes in their expression profiles were associated with upregulation of different ethylene signaling-related and cell-wall modifying genes. Furthermore, ectopic expression of both genes in Arabidopsis promoted floral-organ abscission, and was accompanied by an early increase in the cytosolic pH of floral AZ cells—a phenomenon known to be linked with abscission, and by activation of cell separation in vestigial AZs. Finally, overexpression of both genes in an Atida mutant restored its abscission ability. Our results suggest roles for MiIDA1 and MiIDA2 in affecting mango fruitlet abscission. Based on our results, we propose new possible modes of action for IDA-like proteins in regulating organ abscission.

scholarly journals Molecular Events Involved in Fruitlet Abscission in Litchi

Plants ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 151
Author(s):  
Minglei Zhao ◽  
Jianguo Li
Keyword(s):  
South China ◽  
Fruit Development ◽  
Future Research ◽  
Limiting Factor ◽  
Environmental Cues ◽  
Fruit Abscission ◽  
Fruit Drop ◽  
Plant Body ◽  
Molecular Events ◽  
Fruitlet Abscission

Abscission in plants is an active and highly coordinated physiological process in which organs abscise from the plant body at the abscission zone (AZ) in responding to either developmental or environmental cues. Litchi (Litchi chinensis Sonn.) is an important economic fruit crop widely grown in Southeast Asia particularly in South China. However, the excessive fruit drop during fruit development is a major limiting factor for litchi production. Thus, it is an important agricultural concern to understand the mechanisms underlying the fruit abscission in litchi. Here, we present a review focusing on the molecular events involved in the fruitlet abscission. We also highlight the recent advances on genes specifically associated with fruit abscission and perspectives for future research.

LcEIL2/3 are involved in fruitlet abscission via activating genes related to ethylene biosynthesis and cell wall remodeling in litchi

2020 ◽  
Vol 103 (4) ◽  
pp. 1338-1350
Author(s):  
Xingshuai Ma ◽  
Ye Yuan ◽  
Qian Wu ◽  
Jun Wang ◽  
Jianguo Li ◽  
...  
Keyword(s):  
Cell Wall ◽  
Ethylene Biosynthesis ◽  
Cell Wall Remodeling ◽  
Fruitlet Abscission

Characterization of a major latex protein (MLP) gene down-regulated by ethylene during peach fruitlet abscission

Plant Science ◽  
2002 ◽  
Vol 163 (2) ◽  
pp. 265-272 ◽  
Author(s):  
Benedetto Ruperti ◽  
Claudio Bonghi ◽  
Fiorenza Ziliotto ◽  
Silvana Pagni ◽  
Angela Rasori ◽  
...  
Keyword(s):  
Fruitlet Abscission

scholarly journals The HD-Zip transcription factor LcHB2 regulates litchi fruit abscission through the activation of two cellulase genes

2019 ◽  
Vol 70 (19) ◽  
pp. 5189-5203 ◽  
Author(s):  
Caiqin Li ◽  
Minglei Zhao ◽  
Xingshuai Ma ◽  
Zhenxi Wen ◽  
Peiyuan Ying ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Fruit Abscission ◽  
Direct Binding ◽  
Litchi Fruit ◽  
Fruitlet Abscission

The expression of two cellulases, LcCEL2 and LcCEL8, is strongly associated with fruitlet abscission in litchi and is regulated by direct binding of an HD-Zip transcription factor to the gene promotors.

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