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Co-regulation of biomass partitioning by leafblade morphology genes AFILA, MULTIFOLIATE-PINNA, TENDRIL-LESS and UNIFOLIATA in grain pea Pisum sativum

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Title Co-regulation of biomass partitioning by leafblade morphology genes AFILA, MULTIFOLIATE-PINNA, TENDRIL-LESS and UNIFOLIATA in grain pea Pisum sativum
 
Creator Kumar, Sushil
Mishra, Raghvendra Kumar
Chaudhary, Swati
Pandey, Richa
Yadav, Gitanjali
 
Subject Leafblade Architecturey
AFILA
MULTIFOLIATE-PINNA
TENDRIL-LESS
UNIFOLIATA
Grain Pea
Pisum sativum
Plant Allometry
 
Description In grain pea Pisum sativum, 16 genotypes constructed by combining wild type and mutant alleles of MULTIFOLIATE-
PINNA (MFP), AFILA (AF), TENDRIL-LESS (TL) and UNIFOLIATA (UNI) genes, which differed in leaf blade morphology,
were quantitatively phenotyped for allometry. The biomass partitioning among root, stem, stipule, leaf blade and seeds was
unique for these genotypes suggesting that MFP, AF, TL and UNI genes determined leaf blade and plant architecture. Gene
actions were inferred on the basis of mutant phenotypes. Biomass of all the organs was found to be increased in the tl single
mutant. The af mutation singly and in combination with mfp, mfp tl, mfp uni-tac or mfp tl uni-tac decreased biomass of all
the organs. Allocation of biomass to leaves was increased at the expense of that to seeds or seeds and stems by a single mfp
mutation or in combination with uni-tac, af tl, tl uni-tac and af tl uni-tac mutations. The AF and MFP functions are essential
in pea cultivars for high yield of grains.The mechanism for simultaneous control of leaf blade and plant architecture
suggested by mutant phenotypes has three elements. The MFP, AF, TL and UNI genes exercise control over meristematic
activity in all the organs. Their determination of leaf blade morphology and size affect net photosynthesis or metabolite
supply. The quantities of available metabolites determine numbers and sizes of organs or partitioned total biomass. The tl
allele is identified as a genetic marker/determinant for breeding tendril-less prolific pea cultivars for obtaining herbage and grains in high yields.
The authors thank Director, NIPGR for providing
facilities and Council of Scientific and Industrial
Research and Indian National Science Academy for
sanctioning the Emeritus Scientistship Scheme and
Senior Scientistship Scheme, respectively, to SK.
 
Date 2014-02-20T11:41:13Z
2014-02-20T11:41:13Z
2010
5 May 2009
 
Type Article
 
Identifier Proc. Ind. Natl. Sci. Acad., 75(1): 15-25
http://hdl.handle.net/123456789/150
 
Language en
 
Publisher Indian National Science Academy