New role of arginine metabolism in plant morphogenesis identified

Date:
September 9, 2020
Source:
National Institutes of Natural Sciences
Summary:
A research team found that arginine metabolism has a vital role in
regulating gametophore shoot formation in the moss Physcomitrium
patens.



FULL STORY ========================================================================== Arginine metabolism boosts to make a plant body complex, according to
new research by a collaborative team from Exploratory Research Center on
Life and Living Systems (ExCELLS), National Institute for Basic Biology
(NIBB), RIKEN, Rikkyo University, Toyohashi University of Technology,
Yamagata University, Chiba University, Hokkaido University, and University
of Tokyo in Japan. The findings, now online in Cell Reports, might lead
to a new understanding of amino acid metabolism with a specific role in
plant morphogenesis.


==========================================================================
In the ancestral lineage of land plants, the moss Physcomitrium patens has evolved to produce leafy shoots called gametophore. "Because metabolic reprogramming is necessary for this dramatic evolution in morphology to
ensure the generation of sufficient biomass, we focused on gametophore formation as a model to uncover a mutual interaction between morphogenesis
and metabolism" said Associate Professor Kensuke Kawade at ExCELLS/NIBB.

In the current study, they showed that arginine metabolism is a key
for gametophore formation in Physcomitrium patens and identified
its underlying core pathway mediated by transcriptional co-activators ANGUSTIFOLIA3/GRF- INTERACTING FACTOR1 (AN3/GIF1) family signaling. These findings have advanced our understanding of the mechanism, by which the
shoot system was established via metabolic reprogramming during the
evolution of plants. More generally, this study refines the emerging
concept in biology that developmental and metabolic processes influence
one another for chemical force that facilitates growth, morphogenesis, and maturation. "Future work to clarify what kind of metabolite is produced
from arginine in gametophores promises to unravel the physiological base
of this phenomenon" explained Kawade.


========================================================================== Story Source: Materials provided by
National_Institutes_of_Natural_Sciences. Note: Content may be edited
for style and length.


========================================================================== Journal Reference:
1. Kensuke Kawade, Gorou Horiguchi, Yuu Hirose, Akira Oikawa,
Masami Yokota
Hirai, Kazuki Saito, Tomomichi Fujita, Hirokazu Tsukaya. Metabolic
Control of Gametophore Shoot Formation through Arginine in the
Moss Physcomitrium patens. Cell Reports, 2020; 32 (10): 108127 DOI:
10.1016/ j.celrep.2020.108127 ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2020/09/200909100226.htm

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