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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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Will a stigma react to pollen from another species?
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Do stigmatic pollen loads provide insight into plant-plant interactions?
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Jun 11, 2004 · In this review, we (1) survey recent discoveries of pollen and stigma functions both before and after they make contact, and (2) address the great diversity in pollen and stigma structures across taxa, focusing on how they accomplish key tasks in pollination.
- Anna F. Edlund, Robert Swanson, Daphne Preuss
- 2004
Jan 27, 2020 · In particular, the patterns of covariation between CP and HP on stigmas have been used as proxies for pollinator-mediated competition (negative relationship) and facilitation (positive relationship; Fig. 1B) among plant species at the pre-pollination stage (i.e. before pollen deposition on stigmas; Tur et al., 2016).
- Tia-Lynn Ashman, Conchita Alonso, Victor Parra-Tabla, Gerardo Arceo-Gómez
- 10.1093/aob/mcaa012
- 2020
- Ann Bot. 2020 Jun; 125(7): 1003-1012.
Jun 8, 2018 · Naked mole rat queens stay reproductive through long lives by maintaining the health of a large number of egg cells. The stigmas of flowering plants selectively recognize pollen from the same species in part through biochemical interactions.
Mar 23, 2021 · This study provides evidence that mRNA sequencing can be used to address complex questions related to stigma–pollen interactions over time in pollination ecology.
- Juan Lobaton, Rose Andrew, Jorge Duitama, Lindsey Kirkland, Sarina Macfadyen, Romina Rader
- 2021
May 28, 2018 · Stigma receptivity is a key prerequisite for successful pollination and seed set in flowering plants. From a plant breeder’s perspective, extending the length of time that the stigma can...
- Maurice Bosch, Noni V. E. Franklin-Tong
- 2018
Jul 26, 2021 · Together, this evidence suggests that an incompatible pollen–stigma interaction triggered by SRK–SCR/SP11 binding stimulates the production of ROS in the stigma by activation of FERONIA-regulated NADPH oxidases.
Nov 24, 2020 · Despite heterogeneity of the data origin, findings showed that wild pollinators, especially wild bee species, deposited significantly more pollen grains on a stigma per single visit to a flower than did honey bee.
