Anatomy of leaf abscission in the Amur honeysuckle (Lonicera maackii, Caprifoliaceae): a scanning electron microscopy study

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Anatomy of leaf abscission in the Amur honeysuckle (Lonicera maackii, Caprifoliaceae): a scanning electron microscopy study
	Wang, Hua-Feng; Friedman, Cynthia M. Ross; Shi, Jin-Chao; Zheng, Zhi-Yong
刊名	PROTOPLASMA
	2010-11
卷号	247 期号:3 页码:111-116
关键词	Abaxial gap Amur honeysuckle Anatomy Leaf abscission Lonicera maackii Scanning electron microscopy (SEM)
中文摘要	Lonicera maackii (Rupr.) Maxim. (Amur honeysuckle) is native to Asia and an important ornamental in China. However, the anatomy of leaf abscission (shedding) in L. maackii had not been studied previously. Such work is needed not only because knowledge of the leaf abscission process is important for a horticultural species like L. maackii but also because leaf abscission is probably the least understood abscission process, as it occurs so rapidly. Therefore, our objective was to use scanning electron microscopy (SEM) to examine the progression of leaf abscission in L. maackii at the cellular level. L. maackii branches with leaves were regularly collected in Beijing, China over the 2-month period in which leaves abscise, and examined with SEM. We found that, unlike in model species, the cortex is involved in abscission, forming an "abaxial gap." We discovered that there is no discrete abscission zone prior to the onset of abscission and that no cell divisions precede abscission. An abscission zone did become evident well after the abscission process had begun, but its cells were enlarged, not constricted as in typical abscission zones. In the abaxial gap, intact cells separated at their middle lamella, but in the abscission zone, cell separation involved the entire wall, which is not typical. We did observe expected mechanical fission of vascular tissues. While the leaf abscission process we observed in L. maackii has similarities with model systems, aspects deviate from the expected.
WOS记录号	WOS:000284430600011
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/20952]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Wang, Hua-Feng,Friedman, Cynthia M. Ross,Shi, Jin-Chao,et al. Anatomy of leaf abscission in the Amur honeysuckle (Lonicera maackii, Caprifoliaceae): a scanning electron microscopy study[J]. PROTOPLASMA,2010,247(3):111-116.
APA	Wang, Hua-Feng,Friedman, Cynthia M. Ross,Shi, Jin-Chao,&Zheng, Zhi-Yong.(2010).Anatomy of leaf abscission in the Amur honeysuckle (Lonicera maackii, Caprifoliaceae): a scanning electron microscopy study.PROTOPLASMA,247(3),111-116.
MLA	Wang, Hua-Feng,et al."Anatomy of leaf abscission in the Amur honeysuckle (Lonicera maackii, Caprifoliaceae): a scanning electron microscopy study".PROTOPLASMA 247.3(2010):111-116.