کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5517492 1543200 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polyspermy barriers: a plant perspective
ترجمه فارسی عنوان
موانع پلیاسترمی: یک دیدگاه گیاهی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
چکیده انگلیسی


- Plants have evolved mechanisms, which prevent supernumerary gamete fusion.
- Polyspermy barriers are implemented at different levels in the reproductive process.
- Some of polyspermy preventing mechanisms are potentially conserved between plants and animals.

A common denominator of sexual reproduction in many eukaryotic species is the exposure of an egg to excess sperm to maximize the chances of reproductive success. To avoid potential harmful or deleterious consequences of supernumerary sperm fusion to a single female gamete (polyspermy), many eukaryotes, including plants, have evolved barriers preventing polyspermy. Typically, these checkpoints are implemented at different stages in the reproduction process. The virtual absence of unambiguous reports of naturally occurring egg cell polyspermy in flowering plants is likely reflecting the success of this multiphasic strategy and highlights the difficulty to trace this presumably rare event. We here focus on potential polyspermy avoidance mechanisms in plants and discuss them in light of analogous processes in animals.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Opinion in Plant Biology - Volume 35, February 2017, Pages 131-137
نویسندگان
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