A Cyclic Nucleotide-Gated Channel (CNGC16) in Pollen Is Critical for Stress Tolerance in Pollen Reproductive Development1[W][OA]
نویسندگان
چکیده
Department of Biochemistry, University of Nevada, Reno, Nevada 89557 (M.T.-O., C.T., M.R.I., E.B., C.T.M., L.R.P., S.M., J.F.H.); Department of Molecular Genetics, The Ohio State University, Columbus, Ohio 43210 (N.R.G.); Universidade de Lisboa, Faculdade de Ciências de Lisboa, BioFIG, 1749–016 Lisboa, Portugal (C.R.); Department of Plant Biology and Biotechnology, Centre for Membrane Pumps in Cells and Disease (PUMPKIN), University of Copenhagen, Danish National Research Foundation, 2000 Frederiksberg, Denmark (L.R.P.); The Mina and Everard Goodman Faculty of Life Sciences Bar Ilan University, Ramat-Gan 52900, Israel (G.M.); and Department of Biological Sciences, University of North Texas, Denton, Texas 76203 (R.M.)
منابع مشابه
A cyclic nucleotide-gated channel (CNGC16) in pollen is critical for stress tolerance in pollen reproductive development.
Cyclic nucleotide-gated channels (CNGCs) have been implicated in diverse aspects of plant growth and development, including responses to biotic and abiotic stress, as well as pollen tube growth and fertility. Here, genetic evidence identifies CNGC16 in Arabidopsis (Arabidopsis thaliana) as critical for pollen fertility under conditions of heat stress and drought. Two independent transfer DNA di...
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Ion signals are critical to regulating polarized growth in many cell types, including pollen in plants and neurons in animals. Genetic evidence presented here indicates that pollen tube growth requires cyclic nucleotide-gated channel (CNGC) 18. CNGCs are nonspecific cation channels found in plants and animals and have well established functions in excitatory signal transduction events in animal...
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Pollen grains undergo dramatic changes in cellular water potential as they deliver the male germ line to female gametes, and it has been proposed that mechanosensitive ion channels may sense the resulting mechanical stress. Here, we identify and characterize MscS-like 8 (MSL8), a pollen-specific, membrane tension-gated ion channel required for pollen to survive the hypoosmotic shock of rehydrat...
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Lower plants generate mobile sperm cells that must reach their female counterparts by swimming. This requirement for water is a disadvantage for these plants as compared with angiosperms, for which the dry pollen attaches to a stigma and becomes hydrated, enabling the emerging pollen tube to grow in the protected environment of the pistil. After adhesion, hydration, and germination of the polle...
متن کاملCyclic Nucleotide Gated Channels 7 and 8 Are Essential for Male Reproductive Fertility
The Arabidopsis thaliana genome contains 20 CNGCs, which are proposed to encode cyclic nucleotide gated, non-selective, Ca²⁺-permeable ion channels. CNGC7 and CNGC8 are the two most similar with 74% protein sequence identity, and both genes are preferentially expressed in pollen. Two independent loss-of-function T-DNA insertions were identified for both genes and used to generate plant lines in...
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تاریخ انتشار 2013