TY - JOUR
AU - Pei, Yan
AB - Key message Sink-specific expression of a sucrose transporter protein gene from the C plant maize can promote carbohydrate accumulation in target tissues and increase both fiber and seed yield of cotton. Abstract Sucrose is the principal form of photosynthetic products transported from source tissue to sink tissue in higher plants. Enhancing the partition of carbohydrate to the target organ is a promising way to improve crop productivity. The C plant Zea mays exhibits a substantially higher rate of export of photosynthates than many C plants, and its sucrose trans- porter protein ZmSut1 displays important role in sucrose allocation. To investigate how use of ZmSUT1 gene to increase the fiber and seed yield of cotton, in this study, we expressed the gene in cotton under a senescence-inducible promoter PSAG12 and a seed coat-specific promoter BAN, respectively. We show that senescence-induced expression of ZmSUT1 results in an increase of sugar accumulation in leaves. Although the leaf senescence was postponed in PSAG12::ZmSUT1 cotton, the photosynthetic rate of the leaves was decreased. In contrast, seed coat-specific expression of the gene leads to an increase of sugar accumulation in fibers and bolls, and the leaf of transgenic BAN::ZmSUT1 cotton displayed higher photosynthetic capacity than 
TI - Senescence-induced expression of ZmSUT1 in cotton delays leaf senescence while the seed coat-specific expression increases yield
JO - Plant Cell Reports
DO - 10.1007/s00299-019-02421-1
DA - 2019-05-08
UR - https://www.deepdyve.com/lp/springer-journals/senescence-induced-expression-of-zmsut1-in-cotton-delays-leaf-xB2lHW3R5L
SP - 991
EP - 1000
VL - 38
IS - 8
DP - DeepDyve
ER -