[The effect of integrin-like proteins on pollen germiantion and tube growth of Nicotiana tabacum].
The effects of antiserum against human VnR integrin and integrin antagonist GRGDSP peptides on Nicotiana tabacum pollen germination and tube growth both in in vitro and in semi-vivo conditions were studied. No obvious inhibitory effects on pollen germination and tube growth in vitro were observed when anti-VnR serum or GRGDSP peptides was added to BK culture medium, but the enhancement of pollen germination and tube growth in vitro promoted by calmodulin was depressed by adding anti-VnR serum or GRGDSP peptides to BK culture medium. In addition to that, pollen germination and tube growth on stigma, as well as tube growth in styles were also inhibited at some extent by treating stigma and microinjecting GRGDSP peptides or anti-VnR serum into styles. The role of integrin-like proteins in regulation of pollen germination and tube growth in situ was discussed.
Sun
Y
Y
Department of Biology, Hebei Normal University, Shijiazhuang, 050016.
Han
Y
Y
Zhao
J F
JF
Bai
J
J
Hao
M P
MP
Sun
D Y
DY
D006801:Humans; D007106:Immune Sera / Q000494:pharmacology*; D039302:Integrin alphaVbeta3; D009842:Oligopeptides / Q000494:pharmacology*; D011058:Pollen / Q000187:drug effects / Q000254:growth & development* / Q000502:physiology; D014026:Nicotiana / Q000187:drug effects / Q000254:growth & development* / Q000502:physiology
D007106:Immune Sera; D039302:Integrin alphaVbeta3; D009842:Oligopeptides; C058161:glycyl-arginyl-glycyl-aspartyl-seryl-proline