Extensin-like Glycoproteins in the Maize Pollen Tube Wall.
نویسندگان
چکیده
منابع مشابه
Defensin-Like ZmES4 Mediates Pollen Tube Burst in Maize via Opening of the Potassium Channel KZM1
In contrast to animals and lower plant species, sperm cells of flowering plants are non-motile and are transported to the female gametes via the pollen tube, i.e. the male gametophyte. Upon arrival at the female gametophyte two sperm cells are discharged into the receptive synergid cell to execute double fertilization. The first players involved in inter-gametophyte signaling to attract pollen ...
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Pollen tube germination, growth, and guidance (progamic phase) culminating in sperm discharge is a multi-stage process including complex interactions between the male gametophyte as well as sporophytic tissues and the female gametophyte (embryo sac), respectively. Inter- and intra-specific crossing barriers in maize and Tripsacum have been studied and a precise description of progamic pollen tu...
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Pollen tube guidance precedes the double fertilization of flowering plants. Here, we report the identification of a small maize protein of 94 amino acids involved in short-range signaling required for pollen tube attraction by the female gametophyte. ZmEA1 is exclusively expressed in the egg apparatus, consisting of the egg cell and two synergids. Chimeric ZmEA1 fused to green fluorescent prote...
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59:709-717. 2.Boshart, M., M. Kluppel, A. Schmidt, G. Schutz and B. Luckow. 1992. Reporter constructs with low background activity utilizing the cat gene. Gene 110:129-130. 3.Galas, D.J. and A. Schmitz. 1978. DNase footprinting: a simple method for the detection of protein-DNA binding specificity. Nucleic Acids Res. 5:3157-3170. 4.Hemsley, A., N. Arnheim, M.D. Toney, G. Cortopassi and D.J. Gala...
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During plant sexual reproduction, pollen germination and tube growth require development under tight spatial and temporal control for the proper delivery of the sperm cells to the ovules. Pollen tubes are fast growing tip-polarized cells able to perceive multiple guiding signals emitted by the female organ. Adhesion of pollen tubes via cell wall molecules may be part of the battery of signals. ...
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ژورنال
عنوان ژورنال: The Plant Cell
سال: 1995
ISSN: 1040-4651,1532-298X
DOI: 10.1105/tpc.7.12.2211