Association of decreased expression of a Myb transcription factor with the TPD (tapping panel dryness) syndrome in Hevea brasiliensis.
TPD (tapping panel dryness) is a complex physiological syndrome widely found in rubber tree (Hevea brasiliensis) plantations, which causes severe yield and crop losses in natural rubber-producing countries. The molecular mechanism underlying TPD is not known and there is presently no effective prevention or treatment for this serious disease. To investigate the molecular mechanism of TPD, we isolated and characterized genes for which the change of expression is associated with TPD. We report here the identification and characterization of a Myb transcription factor HbMyb1. HbMyb1 is expressed in leaves, barks, and latex of rubber trees, but its expression is significantly decreased in barks of TPD trees. Our results suggest that the expression of HbMyb1 is likely associated with TPD and that the function of HbMyb1 is associated with the integrity of bark tissue of rubber trees.
Chen
Shoucai
S
National Key Biotechnology Laboratory of Tropical Crops, CATAS, Hainan, 571101, China. ancai@public.hk.hi.cn
Peng
Shiqing
S
Huang
Guixiu
G
Wu
Kunxin
K
Fu
Xianghui
X
Chen
Zhangquan
Z
D000595:Amino Acid Sequence; D001483:Base Sequence; D018076:DNA, Complementary / Q000235:genetics / Q000302:isolation & purification; D018506:Gene Expression Regulation, Plant; D028482:Hevea / Q000235:genetics*; D008969:Molecular Sequence Data; D020626:Oncogene Proteins v-myb / Q000235:genetics*; D010935:Plant Diseases / Q000235:genetics; D010940:Plant Proteins / Q000235:genetics*; D018514:Plant Structures / Q000235:genetics; D018749:RNA, Plant / Q000235:genetics / Q000302:isolation & purification; D020133:Reverse Transcriptase Polymerase Chain Reaction; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid
D018076:DNA, Complementary; D020626:Oncogene Proteins v-myb; D010940:Plant Proteins; D018749:RNA, Plant