Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0367-2530 |
EISSN | 1618-0585 |
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 |
推荐引用方式 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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