期刊
PLANT PHYSIOLOGY AND BIOCHEMISTRY
卷 158, 期 -, 页码 434-445出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.plaphy.2020.11.028
关键词
Plant cuticle; Cuticular waxes; Cutin matrix; ATR-FTIR; Minimum water conductance; Cuticular water permeability; Prunus laurocerasus
The barrier properties of the hydrophobic plant cuticle depend on its physicochemical composition, which varies significantly among different plant species, organs, and developmental stages. Compositional variations in the cuticle lead to different structural and functional barrier properties of the plant cuticle.
Barrier properties of the hydrophobic plant cuticle depend on its physicochemical composition. The cuticular compounds vary considerably among plant species but also among organs and tissues of the same plant and throughout developmental stages. As yet, these intraspecific modifications at the cuticular wax and cutin level are only rarely examined. Attempting to further elucidate cuticle profiles, we analysed the adaxial and abaxial surfaces of the sclemphyllous leaf and three developmental stages of the drupe fruit of Prunus laurocerasus, an evergreen model plant native to temperate regions. According to gas chromatographic analyses, the cuticular waxes contained primarily pentacyclic triterpenoids dominated by ursolic acid, whereas the cutin biopolyester mainly consisted of 9/10,omega-dihydroxy hexadecanoic acid. Distinct organ- and side-specific patterns were found for cuticular lipid loads, compositions and carbon chain length distributions. Compositional variations led to different structural and functional barrier properties of the plant cuticle, which were investigated further microscopically, infrared spectroscopically and gravimetrically. The minimum water conductance was highlighted at 1 x 10(-5) m s(-1) for the perennial, hypostomatous P. laurocerasus leaf and at 8 x 10(-5) m s(-1) for the fewmonth-living, stomatous fruit suggesting organ-specific cuticular barrier demands.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据