Division of labour among culms in the clonal reedArundo donax(Poaceae) is underlain by their pre-determined hydraulic structure

Author:

Shtein Ilana1ORCID,Baruchim Paz1,Lev-Yadun Simcha2

Affiliation:

1. Eastern Region Research and Development Center, Ariel, Israel

2. Department of Biology & Environment, Faculty of Natural Sciences, University of Haifa–Oranim, Tivon, Israel

Abstract

AbstractClonal plants present an interesting example of division of labour among their ramets. Here we elaborated on hydraulic structure in respect to the division of labour among ramets in Arundo donax, a perennial clonal reed. Mature clones have three shoot types: (1) large mostly flowering; (2) medium mostly vegetative and (3) small vegetative. The shoots grow from buds initiating in the upper side of underground rhizomes, and the shoot growth is primary with vasculature produced from the procambium. We tested whether the number of vascular strands in a shoot has a fixed developmental programme or follows a flexible developmental pattern, and we found that the number of vascular strands strongly differs between shoot types. Large shoots on average have 560 vascular strands with both the widest vessels and significantly highest hydraulic conductivity. Medium ones and small shoots have 409 and 102 on average, respectively, with narrower vessels and with low conductivity. Thus, the shoot apices have three alternative developmental programmes. Apparently, a clone is built of functionally different modular units that enable Arundo donax to maximize its potential in a heterogeneous environment. Although the smaller culms do not contribute directly to the sexual reproduction of the clone, under stress their safer hydraulic system offers them a better chance of survival.

Publisher

Oxford University Press (OUP)

Subject

Plant Science,Ecology, Evolution, Behavior and Systematics

Reference42 articles.

1. Functional xylem anatomy in root-shoot junctions of six cereal species;Aloni;Planta,1990

2. Field evaluation of Arundo donax clones for bioenergy production;Amaducci;Industrial Crops and Products,2015

3. Ecology and management of Arundo donax, and approaches to riparian habitat restoration in southern California;Bell,1997

4. Ecological Strategies of Xylem Evolution

5. Comparative Wood Anatomy

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3