PMID: 16664846Jun 1, 1986Paper

Kernel abortion in maize : I. Carbohydrate concentration patterns and Acid invertase activity of maize kernels induced to abort in vitro

Plant Physiology
J M Hanft, R J Jones

Abstract

Kernels cultured in vitro were induced to abort by high temperature (35 degrees C) and by culturing six kernels/cob piece. Aborting kernels failed to enter a linear phase of dry mass accumulation and had a final mass that was less than 6% of nonaborting field-grown kernels. Kernels induced to abort by high temperature failed to synthesize starch in the endosperm and had elevated sucrose concentrations and low fructose and glucose concentrations in the pedicel during early growth compared to nonaborting kernels. Kernels induced to abort by high temperature also had much lower pedicel soluble acid invertase activities than did nonaborting kernels. These results suggest that high temperature during the lag phase of kernel growth may impair the process of sucrose unloading in the pedicel by indirectly inhibiting soluble acid invertase activity and prevent starch synthesis in the endosperm. Kernels induced to abort by culturing six kernels/cob piece had reduced pedicel fructose, glucose, and sucrose concentrations compared to kernels from field-grown ears. These aborting kernels also had a lower pedicel soluble acid invertase activity compared to nonaborting kernels from the same cob piece and from field-grown ears. The low invertas...Continue Reading

Citations

Jan 16, 2013·Carbohydrate Research·Xiaodong Ren, Junjie Zhang
Jun 1, 1986·Plant Physiology·J M Hanft, R J Jones
Oct 1, 1988·Plant Physiology·E Millet, R J Jones
Dec 1, 1988·Plant Physiology·F C Felker, J C Goodwin
Nov 1, 1989·Plant Physiology·A J Reed, G W Singletary
Jul 10, 2010·Annals of Botany·Rie HiyaneJohn S Boyer
Mar 24, 2011·Journal of Integrative Plant Biology·Han-Yu FengShun-Li Zhou
Sep 11, 1999·Plant Physiology·C ZinselmeierJ S Boyer

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