Ectopic expression of pepper CaPF1 in potato enhances multiple stresses tolerance and delays initiation of in vitro tuberization.
Ethylene-responsive factors (ERFs) are plant-specific transcription factors, many of which have been linked to plant defense responses. However, little is known about the functional significance of ERF genes in potato plants compared to the model plant species Arabidopsis. We show here that overexpression of CaPF1, an ERF/AP2-type pepper transcription factor gene, effectively increased tolerance to freezing, heat, heavy metal, and oxidative stress in potatoes. Interestingly, CaPF1 was involved in tuber formation in potato plants. The time course of microtuber formation was significantly retarded in potato plants that overexpressed CaPF1 compared with wild-type potato plants. Overall, the results of the present study indicate that the pepper transcription factor gene, CaPF1, is involved in promotion of multiple stress tolerance and retardation of in vitro tuberization in potato plants.
Youm
Jung Won
JW
Plant Genome Research Center, KRIBB, 111 Gwahangno, Yuseong-gu, Daejeon, 305-806 South Korea.
Jeon
Jae Heung
JH
Choi
Doil
D
Yi
So Young
SY
Joung
Hyouk
H
Kim
Hyun Soon
HS
D000222:Adaptation, Physiological / Q000235:genetics*; D016960:Agrobacterium tumefaciens; D015152:Blotting, Northern; D015139:Blotting, Southern; D002212:Capsicum / Q000235:genetics*; D015870:Gene Expression; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D030821:Plants, Genetically Modified; D016133:Polymerase Chain Reaction; D011198:Solanum tuberosum / Q000235:genetics* / Q000378:metabolism / Q000502:physiology; D013312:Stress, Physiological; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism
D010940:Plant Proteins; D014157:Transcription Factors