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Title 

Regulation of the major vacuolar Ca2+ transporter genes, by intercellular Ca2+ concentration and abiotic stresses, in tip-burn resistant Brassica oleracea

Authors 

Jeongyeo LeeIn Kyu ParkZ W LeeSuk Weon KimN BaekHong-Seog ParkS U ParkSuk Yoon KwonHyeran Kim

Publisher 

Springer Verlag (Germany)

Issue Date 

2013

Citation 

Molecular Biology Reports, vol. 40, no. 1, pp. 177-188

Keywords 

ACABrassica oleraceaCalcium ionCAXTip-burn

Abstract 

Calcium is an essential plant macronutrient that has unique structural and signaling roles related to tip-burn disorder in Brassica spp. crops. For two types of cabbage inbred lines, tip-burn susceptible and resistant, we measured and compared major macronutrient cations, including Ca2+, in leaves. In both lines, Ca2+, Mg2+, Na+, and K +, accumulated more in leaf base than in leaf apex. Ca2+ and K+ were >2 times more abundant in the tip-burn resistant line, while Na+ was higher in the susceptible line. Ca2+ differences between the two lines resulted from differential accumulation of calcium into cell vacuoles. We profiled major vacuolar Ca2+ transporters, in both cabbage lines, by growth time and intercellular Ca 2+ concentration. Expression pattern of several Ca2+ transporter genes differed between tip-burn susceptible and resistant lines by growth time points. We also identified promoter regions of the major Ca 2+ vacuole transporter genes, CAX1, ACA4, and ACA11, which displayed hormonal, light and defense-related cis-acting regulatory elements. Finally, transporter genes in the two cabbage lines responded differently to abiotic stresses, demonstrating diversity in gene regulation among orthologous genes.

ISSN 

0301-4851

Link 

http://dx.doi.org/10.1007/s11033-012-2047-4

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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