Abstract:
:Drought is an important environmental factor that can severely affect plant growth and reproduction. Although many genes related to drought tolerance have been studied in economically important crops, very few genes have been functionally identified in Malus sieversii. In this study, we isolated a new gene based on throughput RNA sequencing analysis and constructed genetic expression vectors and transformed in Arabidopsis thaliana for functional verification. The results showed that MsUspA ectopic expression driven by constitutive (CaMV 35S) promoter gave rise to substantial improvements in ability of transgenic A. thaliana plants to survive under extreme drought conditions. Improved drought resistance mainly depends on more compact cellular structure, longer roots, strong resilience and low-level ROS. Molecular expression analysis showed that MsUspA may be involved in hormone and secondary metabolite synthesis regulation to improve drought resistance.
journal_name
J Plant Resjournal_title
Journal of plant researchauthors
Yang M,Che S,Zhang Y,Wang H,Wei T,Yan G,Song W,Yu Wdoi
10.1007/s10265-019-01133-7subject
Has Abstractpub_date
2019-11-01 00:00:00pages
825-837issue
6eissn
0918-9440issn
1618-0860pii
10.1007/s10265-019-01133-7journal_volume
132pub_type
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