The Response of Maize Root Border Cells to NaCl Stress in the Germination Stage

doi:10.7668/hbnxb.2014.05.024

Abstract

Abstract: NaCl stress is the major factor in salt damage to maize.In this paper,we have studied on the effects of NaCl on the growth of maize roots and root border cells in vitro in germination stage.The results showed that,with the increase of NaCl concentration,radicle length and the number of secondary roots was significantly inhibited,while the survival rate of root border cells was also significantly reduced.However,compared to the control and higher concentration,under the stress of 50-100 mmol/L NaCl,the number of border cells significantly increased,while the stress of 100 mmol/L NaCl maize also significantly stimulated apoptosis rate of border cells in vitro.It indicated the increasing of the number of root border cells and accelerating of apoptosis may be related to the tolerance of maize to lower concentration NaCl stress.This will provide a theoretical basis for in-depth study on maize salt tolerance mechanism,from the perspective of root border cells responding.

Key words: Maize, Root border cell, NaCl stress, Germination stage

CLC Number:

S513.01

CHEN Bo, ZHANG Yan, CAO Mo-ju, RONG Ting-zhao. The Response of Maize Root Border Cells to NaCl Stress in the Germination Stage[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(5): 139-143. doi: 10.7668/hbnxb.2014.05.024.

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