A SIP1 gene of Trihelix family, SlGT-33, promotes chilling tolerance and fruits set under prolonged cold stress in tomatoes.

ABSTRACT:

Background

Trihelix factors play important roles in improving plant resistance to abiotic stress, however, the role of SIP1 subfamily contributing to cold tolerance was rarely reported in tomatoes. Here, we isolated a cold-repressed gene, SlGT-33, from the tomato and found it vital biological function in morphological development and adaptation to prolonged chilling stress.

Results

SlGT-33 belonged to SIP1 clade and was localized to cell nucleus. SlGT-33 was specifically expressed in mature leaves and stems, induced by ABA and dehydration, and repressed by GA and low temperature. Overexpression of SlGT-33 suppressed the chlorophyll synthesis but promoted fruits set than control under prolonged cold conditions. Transcriptome and metabolome analysis demonstrated that SlGT-33 O

SUBMITTER: Zhu Z 

PROVIDER: S-EPMC12522792 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature