The lb23 mutant of recretohalophyte Limonium bicolor (Bag.) Kuntze with 20-, 24-, 28-and 32-cell salt glands shows elevated salt secretion

被引：12

作者：

Leng, Bingying ^{[1
]}

Dong, Xinxiu ^{[1
]}

Lu, Chaoxia ^{[1
]}

Li, Kailun ^{[1
]}

Xu, Yanyu ^{[1
]}

Yuan, Fang ^{[1
]}

Wang, Baoshan ^{[1
]}

机构：

[1] Shandong Normal Univ, Coll Life Sci, Shandong Prov Key Lab Plant Stress, Jinan 250014, Shandong, Peoples R China

来源：

FLORA | 2019年 / 259卷

基金：

中国国家自然科学基金;

关键词：

Limonium bicolor; Salt gland variant; Structure; Cell arrangement; Salt secretion rate; MANGROVE PLANT; SUAEDA-SALSA; H+-ATPASE; TOLERANCE; TRANSCRIPTOME; SALINITY; ACCUMULATION; RESPONSES;

D O I：

10.1016/j.flora.2019.151441

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Salt glands are specialized epidermal salt secretion structures on the surfaces of recretohalophytes leaves. In wild-type plants of the recretohalophyte Limonium bicolor (Bag.) Kuntze, salt glands comprise 16 cells each and appear as a blue ring under fluorescence microscopy, with four strong autofluorescence points. Here, we describe the lb23 mutant, which showed four additional types of salt glands, with five, six, seven and eight strong autofluorescence points. These salt glands comprised 20, 24, 28 and 32 cells, respectively, with correspondingly increased numbers of secretory, accessory, inner cup and outer cup cells. The cell arrangement and cell types within the salt glands in the mutant were unaltered from those of the wild type. For example, salt glands with five strong autofluorescence points had five secretory cells, five accessory cells, five inner cup cells and five outer cup cells. Compared with wild type, the abnormal salt glands with five, six, seven and eight strong autofluorescence points showed higher salt secretion rates per salt gland. Thus, the increase in salt gland cell numbers resulted in markedly increased salt secretion. This L. bicolor mutant provides an important resource for research on the molecular mechanism of salt gland development.

引用

页数：9