Multilayered regulation of developmentally programmed pre-anthesis tip degeneration of the barley inflorescence.

ABSTRACT: Leaf and floral tissue degeneration is a common feature in plants. In cereal crops such as barley (Hordeum vulgare L.), pre-anthesis tip degeneration (PTD) starts with growth arrest of the inflorescence meristem dome, which is followed basipetally by the degeneration of floral primordia and the central axis. Due to its quantitative nature and environmental sensitivity, inflorescence PTD constitutes a complex, multilayered trait affecting final grain number. This trait appears to be highly predictable and heritable under standardized growth conditions, consistent with a developmentally programmed mechanism. To elucidate the molecular underpinnings of inflorescence PTD, we combined metabolomic, transcriptomic, and genetic approaches to show that barley inflorescence PTD is accompanied by sug

SUBMITTER: Shanmugaraj N 

PROVIDER: S-EPMC10615218 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature