<abstract xmlns="http://www.w3.org/1999/xhtml">

Calcium ions are involved in plant self-incompatibility response as important signaling substances in cells. In the sporophytic self-incompatibility response, Ca2+ enters the stigma papilla cells and plays a key role in inhibiting incompatible pollen tube growth. In the gametophytic self-incompatibility reaction of Papaveraceae, the female determinants in the style (<italic>PrsS</italic>) and the male determinants in the pollen (<italic>PrpS</italic>) recognize each other, promote extracellular Ca2+ influx into the incompatible pollen tube, destroy the calcium ion gradient at the tip of the pollen tube, and inhibit the pollen tube growth. In the S-RNase-based Rosaceae game-tophytic self-incompatibility response, it is still unclear how the S-RNase interacts with the male determinant and how the S-RNase specifically degrades the RNA in the pollen tube. Therefore, we reviewed the research progress on the role of Ca2+ in self-incompatibility and, based on our research results, proposed a role model of Ca2+ as a signal substance in the gametophyte self-incompatibility response in Rosaceae.
</abstract>

Calcium ions are involved in plant self-incompatibility response as important signaling substances in cells. In the sporophytic self-incompatibility response, Ca2+ enters the stigma papilla cells and plays a key role in inhibiting incompatible pollen tube growth. In the gametophytic self-incompatibility reaction of Papaveraceae, the female determinants in the style (PrsS) and the male determinants in the pollen (PrpS) recognize each other, promote extracellular Ca2+ influx into the incompatible pollen tube, destroy the calcium ion gradient at the tip of the pollen tube, and inhibit the pollen tube growth. In the S-RNase-based Rosaceae game-tophytic self-incompatibility response, it is still unclear how the S-RNase interacts with the male determinant and how the S-RNase specifically degrades the RNA in the pollen tube. Therefore, we reviewed the research progress on the role of Ca2+ in self-incompatibility and, based on our research results, proposed a role model of Ca2+ as a signal substance in the gametophyte self-incompatibility response in Rosaceae.

Research Progress on Calcium Ion in Gametophytic Self-Incompatibility

School of Ecology, Resources and Environment

Journal of Horticultural Research

This work is licensed under the Creative Commons Attribution 4.0 International License.

{"article-title":"Research Progress on Calcium Ion in Gametophytic Self-Incompatibility"}

Calcium ions are involved in plant self-incompatibility response as important signaling substances in cells. In the sporophytic self-incompatibility response,...

Research Progress on Calcium Ion in Gametophytic Self-Incompatibility

Published Online: Nov 12, 2022

Page range: 13 - 22

Received: Mar 01, 2022

Accepted: Sep 01, 2022

DOI: https://doi.org/10.2478/johr-2022-0016

Keywords
calcium, pollen tube, gametophytic self-incompatibility, sporophytic self-incompatibility

© 2022 Yanling Guo et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Research Progress on Calcium Ion in Gametophytic Self-Incompatibility

Published Online: Nov 12, 2022

Page range: 13 - 22

Received: Mar 01, 2022

Accepted: Sep 01, 2022

DOI: https://doi.org/10.2478/johr-2022-0016

Keywordscalcium, pollen tube, gametophytic self-incompatibility, sporophytic self-incompatibility

© 2022 Yanling Guo et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
calcium, pollen tube, gametophytic self-incompatibility, sporophytic self-incompatibility