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- Defines stigmas as uniquely water-permeant sites on the plant; proteins and lipids are involved in adhesion, hydration, and germination; dry stigmas are pollen compatibility sites, with selective support of pollen hydration and germination, whereas wet stigmas often are covered in exudates from apoptotic cells and block inappropriate pollination only in later steps; at the point of contact between pollen and stigma, the two coatings may mix, a process that mediates coat conversion, hydration,...
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Jun 11, 2004 · Pollen lands on the stigma, where it hydrates, germinates, and extends a tube that enters the transmitting tract (TT). The tube emerges onto the septum (S), grows up the funiculus (f), and enters the micropyle opening of the ovule (O), where it fertilizes the egg and central cell.
- Anna F. Edlund, Robert Swanson, Daphne Preuss
- 2004
Step one: After pollen has landed on the stigma, it grows a pollen tube down through the style to the ovary. Step two: The nucleus of the pollen grain travels down the pollen tube and...
Jan 27, 2020 · We conceptually summarize how the study of pollen on stigmas of spent flowers can reflect key drivers and functional aspects of the plant–pollinator interaction (e.g. competition, facilitation or commensalism).
- Tia-Lynn Ashman, Conchita Alonso, Victor Parra-Tabla, Gerardo Arceo-Gómez
- 10.1093/aob/mcaa012
- 2020
- Ann Bot. 2020 Jun; 125(7): 1003-1012.
Nov 24, 2020 · Wild pollinators deposited more pollen onto stigmas per single visit than honeybees, and those with larger body deposited significantly more pollen than smaller ones. Of the two methodological approaches to assess SVD, ‘static’ versus ‘active’, we found no significant difference regarding the amount of deposited pollen. Synthesis and applications.
- Rita Földesi, Brad G. Howlett, Ingo Grass, Péter Batáry
- 55
- 2021
- 24 November 2020
Jun 8, 2018 · The stigmas of flowering plants selectively recognize pollen from the same species in part through biochemical interactions.
Dec 2, 2021 · The transfer of a pollen grain to the stigma of a flower pistil is called pollination. How does pollination happen, and what helps to bring pollen grains to a stigma? Sometimes pollen is simply carried by the wind to the stigma of a pistil, but often a pollinator helps with this process.
Oct 1, 2022 · Upon landing on the stigma, the pollen grain hydrates and germinates a pollen tube to penetrate the pistil and transport sperm as its cytoplasmic cargo to the female gametophyte.
