Sugar-responsive Gene Expression, Invertase Activity, and Senescence in Aborting Maize Ovaries at Low Water Potentials | Zendy

J. McLaughlin | Zendy; John S. Boyer | Zendy

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Sugar-responsive Gene Expression, Invertase Activity, and Senescence in Aborting Maize Ovaries at Low Water Potentials

Author(s) -

J. McLaughlin,

John S. Boyer

Publication year - 2004

Publication title -

annals of botany

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.567

H-Index - 176

eISSN - 1095-8290

pISSN - 0305-7364

DOI - 10.1093/aob/mch193

Subject(s) - invertase , biology , ovary , senescence , sucrose , sugar , gene , gene expression , botany , biochemistry , microbiology and biotechnology , genetics

Ovary abortion can occur in maize (Zea mays) if water deficits lower the water potential (psiw) sufficiently to inhibit photosynthesis around the time of pollination. The abortion decreases kernel number. The present work explored the activity of ovary acid invertases and their genes, together with other genes for sucrose-processing enzymes, when this kind of abortion occurred. Cytological evidence suggested that senescence may have been initiated after 2 or 3 d of low psiw, and the expression of some likely senescence genes was also determined.

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