TY  - JOUR
AU  - Chen, X.
AU  - Pierik, R.
AU  - Peeters, A.J.M.
AU  - Poorter, H.
AU  - Visser, E.J.W.
AU  - Huber, H.
AU  - de Kroon, H.
AU  - Voesenek, L.A.C.J.
TI  - Endogenous Abscisic Acid as a Key Switch for Natural Variation in Flooding-Induced Shoot Elongation
JO  - Plant physiology
VL  - 154
SN  - 0032-0889
CY  - Rockville, Md.: Soc.
PB  - JSTOR
M1  - PreJuSER-11557
SP  - 969 - 977
PY  - 2010
N1  - This work was supported by the Netherlands Organization for Scientific Research (NWO-ALW; VENI grant no. 86306001 to R.P.).
AB  - Elongation of leaves and stem is a key trait for survival of terrestrial plants during shallow but prolonged floods that completely submerge the shoot. However, natural floods at different locations vary strongly in duration and depth, and, therefore, populations from these locations are subjected to different selection pressure, leading to intraspecific variation. Here, we identified the signal transduction component that causes response variation in shoot elongation among two accessions of the wetland plant Rumex palustris. These accessions differed 2-fold in petiole elongation rates upon submergence, with fast elongation found in a population from a river floodplain and slow elongation in plants from a lake bank. Fast petiole elongation under water consumes carbohydrates and depends on the (inter)action of the plant hormones ethylene, abscisic acid, and gibberellic acid. We found that carbohydrate levels and dynamics in shoots did not differ between the fast and slow elongating plants, but that the level of ethylene-regulated abscisic acid in petioles, and hence gibberellic acid responsiveness of these petioles explained the difference in shoot elongation upon submergence. Since this is the exact signal transduction level that also explains the variation in flooding-induced shoot elongation among plant species (namely, R. palustris and Rumex acetosa), we suggest that natural selection results in similar modification of regulatory pathways within and between species.
KW  - Abscisic Acid: physiology
KW  - Carbohydrates: analysis
KW  - Ethylenes: metabolism
KW  - Floods
KW  - Gibberellins: physiology
KW  - Molecular Sequence Data
KW  - Plant Growth Regulators: physiology
KW  - Plant Shoots: growth & development
KW  - RNA, Plant: genetics
KW  - Rumex: genetics
KW  - Rumex: growth & development
KW  - Rumex: physiology
KW  - Signal Transduction
KW  - Water: physiology
KW  - Carbohydrates (NLM Chemicals)
KW  - Ethylenes (NLM Chemicals)
KW  - Gibberellins (NLM Chemicals)
KW  - Plant Growth Regulators (NLM Chemicals)
KW  - RNA, Plant (NLM Chemicals)
KW  - Abscisic Acid (NLM Chemicals)
KW  - ethylene (NLM Chemicals)
KW  - gibberellic acid (NLM Chemicals)
KW  - Water (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:20699400
C2  - pmc:PMC2949041
UR  - <Go to ISI:>//WOS:000282512300067
DO  - DOI:10.1104/pp.110.162792
UR  - https://juser.fz-juelich.de/record/11557
ER  -