One of the adaptive traits of rice that allow it to withstand submergence is the presence of aerenchyma, which allow transport of oxygen to submerged organs. Parlanti et al.Β study aerenchyma development in two varieties of rice (Oryza sativa) that show contrasting responses to flooding in terms of internode elongation. They show that whilst ethylene controls arenchyma formation in the fast-elongating variety, the non-elongating variety also produces more arenchyma but without an increase in ethylene; instead, it is associated with an increase in levels of hydrogen peroxide.
2 comments
You may also like
Lysigenic PCD and schizogenously formed aerenchyma
This study reveals the optimal metabolic adaptation of E. densa stems to submerged habitats via lysigenic PCD and schizogenously formed aerenchyma
Radial O2-loss barrier induction and arenchyma formation
Radial O2-loss barrier induction and arenchyma formation Many wetland species form both aerenchyma and a barrier to radial oxygen loss (ROL) in roots, which enhance internal O2 diffusion to the root apex. Shiono et al...
Oxygen transport via aerenchyma in soybean
When in flooded soil, soybean, Glycine max, produces aerenchyma and hypertrophic stem lenticels. Shimamura et al. (pp. 277β284) investigate the oxygen dynamics in these tissues and find that hypertrophic lenticels on...
To find out more, including how to control cookies, see here: Cookie Policy
Read this in your language
The Week in Botany
On Monday mornings we send out a newsletter of the links that have been catching the attention of our readers on Twitter and beyond. You can sign up to receive it below.
which type of aerenchyma formation are you focussing upon i.e., lysigenous or schyzigenus
The abstract only mentions lysigenous aerenchyma. It’s available at doi:10.1093/aob/mcr086. I hope that helps.