TITLE:
COR-Like Gene Is Involved in Induced-Expression Response to Multiple Abiotic Stresses in Grape Vine (Vitis amurensis) Tissues
AUTHORS:
Chang Dong, Yang Qin, Bailin Wang, Huiling Lu, Lizhen Xiao, Ruihua Yang, Yu Wang, Lixin Chen, Yixin Feng
KEYWORDS:
Vitis amurensis, COR, Stress, Expression
JOURNAL NAME:
Agricultural Sciences,
Vol.5 No.7,
June
10,
2014
ABSTRACT: Cold stress, which
causes dehydration damage to plants, is one of the most common abiotic stresses
that limit plant distributions and affect crop growth and development. To improve
their cold tolerance, plants often upregulate the expression of some cold-related
genes. In this study, a cold-regulated (COR) gene was isolated from Vitis amurensis and designated as VaCOR. RT-PCR analysis demonstrated that VaCOR was expressed at high levels in
the roots, stems, leaves, and petioles under low temperature, but it was not detected
under normal temperatures. Further analysis revealed that salinity and the application
of exogenous abscisic acid and salicylic acid significantly induced VaCOR transcription, with apparent differences
in its expression in different organs. The data also showed that COR gene expression
was higher in cold-resistant wild V. amurensis than in cold-sensitive Vitis vinifera “Manicure
Finger” under low temperature. These results suggest that the VaCOR gene in V. amurensis grapes is involved in multiple stresses and plays a central
role in stress-induced and stress-tolerance.