Arid
DOI10.1016/j.flora.2019.02.008
Mechanisms of nitrogen conservation at the leaf-level in annual and perennial desert forbs: Implications for perennial crops domestication
Gonzalez-Paleo, L.1,2; Pastor-Pastor, A.1; Rajnoch, G.2; Ravetta, D. A.1,2
通讯作者Gonzalez-Paleo, L.
来源期刊FLORA
ISSN0367-2530
EISSN1618-0585
出版年2019
卷号252页码:62-68
英文摘要Perennial plants show traits such as long-lived leaves and higher nutrient retention that provide a more efficient use of nutrients in low-resource environments when compared to annuals. These traits do not only generate yield stability but should be relevant in the provision of regulating ecosystem services for sustainability. The understanding of the mechanisms underlying nutrient use and conservation in perennial herbaceous crops might provide useful evidence to test the potential benefits of perennial crops in low-resource environments. Using annual and perennial Physaria as a working model, we tested the link between nitrogen use efficiency (NUE), plant's life-cycle, and specific leaf area (SLA), as an indicator of C economy strategy. As expected, SLA was pivotal in determining differences in N use and conservation, except for two processes: resorption efficiency and proficiency. The maintenance of green leaf tissues through long-lived leaves in perennials may play a key role in the capacity to store carbon and nitrogen during the grain-filling phase. Perennials had 50% less leaf senescence, lost 50% less nitrogen, had higher mean residence time, and a higher nitrogen use efficiency than annuals. Photosynthetic N use efficiency and N productivity were dependent on environmental conditions: perennials which maintained a conservative strategy both years also showed a more stable biomass production. Traits relevant for the ability to minimize nitrogen losses and internal plant nitrogen turnover over multiple seasons shown by perennials may be relevant in improving both resource use efficiency and yield stability.
英文关键词New crops Physaria Leaf life-span Specific leaf area Nitrogen retention Nitrogen resorption
类型Article
语种英语
国家Argentina
收录类别SCI-E
WOS记录号WOS:000459917800008
WOS关键词USE EFFICIENCY ; NUTRIENT RESORPTION ; LIFE-SPAN ; WATER-USE ; YIELD ; WILD ; PRODUCTIVITY ; TRADEOFFS ; SELECTION ; STRATEGY
WOS类目Plant Sciences ; Ecology
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/215641
作者单位1.Consejo Nacl Invest Cient & Tecn, Museo Egidio Feruglio, Av Fontana 140, RA-9100 Trelew, Argentina;
2.Univ Nacl Patagonia San Juan Bosco, Chubut, Argentina
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GB/T 7714
Gonzalez-Paleo, L.,Pastor-Pastor, A.,Rajnoch, G.,et al. Mechanisms of nitrogen conservation at the leaf-level in annual and perennial desert forbs: Implications for perennial crops domestication[J],2019,252:62-68.
APA Gonzalez-Paleo, L.,Pastor-Pastor, A.,Rajnoch, G.,&Ravetta, D. A..(2019).Mechanisms of nitrogen conservation at the leaf-level in annual and perennial desert forbs: Implications for perennial crops domestication.FLORA,252,62-68.
MLA Gonzalez-Paleo, L.,et al."Mechanisms of nitrogen conservation at the leaf-level in annual and perennial desert forbs: Implications for perennial crops domestication".FLORA 252(2019):62-68.
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