Arabidopsis BUPS-ANX Receptor Complex Coordinates with RALF Peptides to Regulate Pollen Tube Integrity and Sperm Release

This book provides insights into the latest studies on plant reproduction, signaling in reproductive development, and the BUPS-ANX receptor complex. It offers a working model of female tissue-derived RALF34 competing with RALF4/19 from the BUPS-ANX to trigger pollen tube rupture and sperm release.

Format: Paperback / softback
Length: 71 pages
Publication date: 16 June 2021
Publisher: Springer Verlag, Singapore

This comprehensive book delves into the latest advancements in plant reproduction and various aspects of reproductive development signaling. It presents cutting-edge research on the CrRLK1L receptor and RALF peptide studies during plant development, offering valuable insights into the BUPS-ANX receptor complex and its corresponding ligands, RALF4/19, in promoting pollen tube growth with proper cell integrity. Furthermore, it proposes a working model of female tissue-derived RALF34 competing with RALF4/19 from the BUPS-ANX to trigger pollen tube rupture and sperm release. By providing a detailed overview of the spatiotemporal regulation mechanism underlying the control of pollen tube integrity and sperm release, this book fills a significant gap in our understanding of plant reproductive processes and serves as a valuable resource for researchers and professionals working in the field of plant signaling.

Introduction:
The study of plant reproduction is a fundamental aspect of botany and agriculture, as it plays a crucial role in ensuring the sustainability of food production. Over the years, significant progress has been made in understanding the molecular mechanisms underlying plant reproduction, including the regulation of pollen tube integrity and sperm release. This book aims to summarize the latest studies on these topics and provide a comprehensive overview of the signaling pathways involved.

Signaling in Pollen Tube Integrity:
Pollen tube integrity is a critical step in plant reproduction, as it allows the transfer of sperm from the male gametes to the female gametes. Several signaling pathways have been identified that regulate this process, including the BUPS-ANX receptor complex and its corresponding ligands, RALF4/19. RALF4/19 is a peptide that is synthesized in the female reproductive tissues and plays a key role in promoting pollen tube growth. It binds to the BUPS-ANX receptor complex, which in turn triggers a series of signaling events that lead to the formation of a stable pollen tube.

Working Model of Female Tissue-Derived RALF34 Competing with RALF4/19:
Recent research has revealed that female tissue-derived RALF34 competes with RALF4/19 from the BUPS-ANX receptor complex to trigger pollen tube rupture and sperm release. This working model suggests that RALF34 acts as a negative regulator of pollen tube growth, while RALF4/19 promotes pollen tube integrity. The competition between these two ligands determines the fate of the pollen tube, with RALF4/19 promoting pollen tube growth and rupture, while RALF34 inhibits these processes.

Signaling in Sperm Release Regulation:
Sperm release is another critical aspect of plant reproduction, as it allows the fertilization of the female gametes. Several signaling pathways have been identified that regulate this process, including the MAPK pathway and the calcium signaling pathway. The MAPK pathway is activated by various environmental cues, such as stress and pathogen infection, and plays a key role in regulating sperm release. Calcium signaling is also involved in sperm release, as it triggers the release of calcium ions from the sperm cell, which in turn activates the sperm acrosome reaction.

Conclusion:
In conclusion, this book provides a comprehensive overview of the latest studies on plant reproduction and signaling pathways involved in pollen tube integrity and sperm release. It highlights the importance of these signaling pathways in plant reproduction and their potential applications in agriculture and biotechnology. By understanding these signaling pathways, we can develop new strategies to improve crop yields and reduce environmental impact.

Weight: 454g
Dimension: 235 x 155 (mm)
ISBN-13: 9789811554933
Edition number: 1st ed. 2020