Interaction between cochleata and stipule-reduced mutations results in exstipulate hypertrophied leaves in Pisum sativum L.

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dc.contributor.authorKumar, Arvind
dc.contributor.authorSharma, Vishakha
dc.contributor.authorKumar, Sushil
dc.date.accessioned2013-07-31T09:23:26Z
dc.date.available2013-07-31T09:23:26Z
dc.date.issued2013-07
dc.description.abstractIn the wild type P. sativum, each of the adult plant stem nodes, bears a pair of sessile foliaceous stipules and a petiolated unipinnately compound leaf of 4 to 6 leaflets and 7-9 tendrils. The stipule-reduced (st) and cochleata (coch) single null mutants and coch st double null mutant differ fom the wild type in respectively having sessile stipules of much reduced size, petiolated simple and/or compound leaf-like stipules and no stipules. It is also known that coch leaves are somewhat bigger than st and wild type leaves. Here, pleiotropic phenotype of coch st double mutant was investigated. The morphologies of stipules and leaf were quantified in the field grown plants and microcultured shoots, latter in the presence and absence of gibberellic acid and N-1-naphthylphthalamic acid. The observations showed that as compared to the corresponding plants or shoots of COCH ST (WT) genotype, (a) coch st plants bore leaves in which all the organs were hypertrophied; (b) full complement of leaflets and 3-5 tendrils were formed on leaf; (c) the microcultured coch st shoots were taller despite lower number of nodes, and (d) they also produced leaves in which all the organs were bigger and the ratio of leaflets/tendrils was higher. It was concluded that in coch st double mutant (a) ST function is essential for stipule primordium differentiation, in the absence of COCH function and (b) absence of negative feedback loops between simple stipules and compound leaf for metabolite utilization allows hypertrophied growth in leaves.en_US
dc.identifier.citationKumar Arvind, Sharma Vishakha, Kumar Sushil. Interaction between cochleata and stipule-reduced mutations results in exstipulate hypertrophied leaves in Pisum sativum L. Indian Journal of Experimental Biology. 2013 Jul; 51(7): 492-501.en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/147619
dc.language.isoenen_US
dc.source.urihttps://nopr.niscair.res.in/handle/123456789/19387en_US
dc.subjectBiomass allocationen_US
dc.subjectCompound leafen_US
dc.subjectCompound stipuleen_US
dc.subjectPhytomere regulationen_US
dc.subjectSimple stipuleen_US
dc.subjectUNIFOLIATAen_US
dc.subject.meshCells, Cultured
dc.subject.meshGene Expression Regulation, Plant
dc.subject.meshGenes, Plant --genetics
dc.subject.meshGibberellins --pharmacology
dc.subject.meshHypertrophy
dc.subject.meshMorphogenesis
dc.subject.meshMutation --genetics
dc.subject.meshPeas --drug effects
dc.subject.meshPeas --genetics
dc.subject.meshPeas --growth & development
dc.subject.meshPhenotype
dc.subject.meshPlant Growth Regulators --pharmacology
dc.subject.meshPlant Leaves --drug effects
dc.subject.meshPlant Leaves --genetics
dc.subject.meshPlant Leaves --growth & development
dc.titleInteraction between cochleata and stipule-reduced mutations results in exstipulate hypertrophied leaves in Pisum sativum L.en_US
dc.typeArticleen_US
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