Overcoming the trade-off between grain weight and number in wheat by the ectopic expression of expansin in developing seeds leads to increased yield potential

Overcoming the trade-off between grain weight and number in wheat by the ectopic expression of expansin in developing seeds leads to increased yield potential

© 2020 The Authors. New Phytologist © 2020 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 230(2021), 2 vom: 19. Apr., Seite 629-640
1. Verfasser: Calderini, Daniel F (VerfasserIn)
Weitere Verfasser: Castillo, Francisca M, Arenas-M, Anita, Molero, Gemma, Reynolds, Matthew P, Craze, Melanie, Bowden, Sarah, Milner, Matthew J, Wallington, Emma J, Dowle, Adam, Gomez, Leonardo D, McQueen-Mason, Simon J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't expansin protein grain number grain weight grasses pericarp trade-off transgenic Plant Proteins
Beschreibung
Zusammenfassung:© 2020 The Authors. New Phytologist © 2020 New Phytologist Foundation.
Wheat is the most widely grown crop globally, providing 20% of all human calories and protein. Achieving step changes in genetic yield potential is crucial to ensure food security, but efforts are thwarted by an apparent trade-off between grain size and number. Expansins are proteins that play important roles in plant growth by enhancing stress relaxation in the cell wall, which constrains cell expansion. Here, we describe how targeted overexpression of an α-expansin in early developing wheat seeds leads to a significant increase in grain size without a negative effect on grain number, resulting in a yield boost under field conditions. The best-performing transgenic line yielded 12.3% higher average grain weight than the control, and this translated to an increase in grain yield of 11.3% in field experiments using an agronomically appropriate plant density. This targeted transgenic approach provides an opportunity to overcome a common bottleneck to yield improvement across many crops
Beschreibung:Date Completed 14.05.2021
Date Revised 14.05.2021
published: Print-Electronic
CommentIn: New Phytol. 2021 Apr;230(2):403-405. - PMID 33650686
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.17048