2018年12月20日 · Homologues of seed shattering genes were identified and isolated from perennial ryegrass, and the relative gene expression results suggested that several genes, including LpqSH1 and LpSH1, might have a role in abscission layer …

We examine the abscission layer at the flower-pedicel junction in weedy rice prior to, at and shortly after flowering to determine morphology and level of degradation of this layer in relation to seed shattering ability, and compare these results to those of wild and cultivated Oryza, to gain insight into how traits important to weed fitness ...

2024年8月9日 · The abscission process consists of several overlapping steps, including differentiation of the abscission zone, activation of abscission, tissue detachment, and formation of a protective layer (Fig. 1a). In the final part, we discuss the potential applications of physiological modifications and genetic manipulations of plant abscission for crop ...

2015年6月23日 · Seed shattering (or pod dehiscence, or fruit shedding) is essential for the propagation of their offspring in wild plants but is a major cause of yield loss in crops. In the dicot model species, Arabidopsis thaliana, pod dehiscence necessitates a development of the abscission zones along the pod valve margins.

2018年12月20日 · Homologues of seed shattering genes were identified and isolated from perennial ryegrass, and the relative gene expression results suggested that several genes, including LpqSH1 and LpSH1, might have a role in abscission layer …

2019年2月1日 · Homologues of seed shattering genes were identified and isolated from perennial ryegrass, and the relative gene expression results suggested that several genes, including LpqSH1 and LpSH1, might...

In many monocot plants, seed shattering is achieved by degradation of the abscission layer formed at the basal part of grains. After fertilisation, plants transfer nutrients to seeds, but as soon as the seed matures, the abscission layer begins to degrade.

2019年2月20日 · Previous studies have shown that seed shattering is determined by the development of the abscission layer, which is located at the junction of the seed base and the pedicel. In general, easy-shattering varieties form a complete abscission layer.

These results demonstrate that OsCPL1 represses differentiation of the abscission layer during panicle development. Although susceptibility to seed shattering causes severe yield loss during cereal crop harvest, it is an adaptive trait for seed dispersal in wild plants.

The first step in seed or pod shattering is the formation of an abscission layer at the point where the seeds or pods are attached to the plants. Though the fundamental mechanism of abscission is the same for many crops, it varies with the type of tissue, as it may be the spikelet in cereals or a pod in legumes ( Dong and Wang, 2015 ).