干旱区生态环境知识资源中心(Arid): Involvement of soluble proteins in growth and metabolic adjustments of drought-stressed Calligonum mongolicum seedlings under nitrogen addition

Arid

DOI	10.1111/plb.13190
	Involvement of soluble proteins in growth and metabolic adjustments of drought-stressed Calligonum mongolicum seedlings under nitrogen addition
	Zhang, Z.; Tariq, A.; Zeng, F.; Chai, X.; Graciano, C.
通讯作者	Tariq, A ; Zeng, F
来源期刊	PLANT BIOLOGY
ISSN	1435-8603
EISSN	1438-8677
英文摘要	The planting of seedlings is the most effective measure for vegetation restoration. However, this practice is challenging in desert ecosystems where water and nutrients are scarce. Calligonum mongolicum is a sand-fixing pioneer shrub species, and its adaptive strategy for nitrogen (N) deposition and drought is poorly understood. Thus, in a pot experiment, we studied the impacts of four N levels (0, 3, 6, 9 gN center dot m(-2)center dot year(-1)) under drought or a well-watered regime on multiple eco-physiological responses of 1-year-old C. mongolicum seedlings. Compared to well-watered conditions, drought considerably influenced seedling growth by impairing photosynthesis, osmolyte accumulation and activity of superoxide dismutase and enzymes related to N metabolism. Nitrogen addition improved the productivity of drought-stressed seedlings, as revealed by increased water use efficiency, enhanced superoxide dismutase and nitrite reductase activity and elevated N and phosphorus (P) levels in seedlings. Nevertheless, the addition of moderate to high levels of N (6-9 gN center dot m(-2)center dot year(-1)) impaired net photosynthesis, osmolyte accumulation and nitrate reductase activity. N addition and water regimes did not markedly change the N:P ratios of aboveground parts; while more biomass and nutrients were allocated to fine roots to assimilate the insufficient resources. Soluble protein in assimilating shoots might play a vital role in adaptation to the desert environment. The response of C. mongolicum seedlings to N addtion and drought involved an interdependency between soluble protein and morphological, physiological and biochemical processes. These findings provide an important reference for vegetation restoration in arid lands under global change.
英文关键词	Elemental stoichiometry global change N addition network analysis resource allocation
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000585686000001
WOS关键词	BIOMASS ALLOCATION ; ROOT ; LEAF ; WATER ; DEPOSITION ; SHOOT ; IMPACTS ; TRAITS ; FERTILIZATION ; ACCUMULATION
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328436
作者单位	[Zhang, Z.; Tariq, A.; Zeng, F.; Chai, X.] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Key Lab Desert Plant Root Ecol & Vegetat, Urumqi 830011, Peoples R China; [Zhang, Z.; Tariq, A.; Zeng, F.; Chai, X.] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China; [Zhang, Z.; Tariq, A.; Zeng, F.; Chai, X.] Cele Natl Stn Observat & Res Desert Grassland Eco, Cele, Peoples R China; [Zhang, Z.; Chai, X.] Univ Chinese Acad Sci, Beijing, Peoples R China; [Graciano, C.] Univ Nacl La Plata, Inst Fisiol Vegetal, Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina
推荐引用方式 GB/T 7714	Zhang, Z.,Tariq, A.,Zeng, F.,et al. Involvement of soluble proteins in growth and metabolic adjustments of drought-stressed Calligonum mongolicum seedlings under nitrogen addition[J]. 中国科学院新疆生态与地理研究所.
APA	Zhang, Z.,Tariq, A.,Zeng, F.,Chai, X.,&Graciano, C..
MLA	Zhang, Z.,et al."Involvement of soluble proteins in growth and metabolic adjustments of drought-stressed Calligonum mongolicum seedlings under nitrogen addition".PLANT BIOLOGY