Artificially-induced leaf nitrate accumulation affects photosynthesis in micropropagated apple plants with different water supply

doi:10.1080/14620316.2008.11512403

	Artificially-induced leaf nitrate accumulation affects photosynthesis in micropropagated apple plants with different water supply
	Zhao, J. Y.1,2; Dai, Z. W.1; Li, S. H.1,3; Kong, Y.4
	2008-07
发表期刊	JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY
卷号	83 期号:4 页码:435-440
摘要	One-year-old micropropagated 'Gala' apple (Malus X domestica Borkh.) plants with split root systems were supplied with tungsten (Na2WO4), an inhibitor of nitrate reductase activity, and NaNO3, separately, or in combination. The chemicals were supplied either through the xylem (40 ml 0.3 mM Na2WO4 or 3 mM NaNO3), or as foliar sprays (30 mM NaNO3 and 20 mM Na2WO4). When applied separately, neither increased the NO3- content of leaves, although Na2WO4 inhibited foliar nitrate reductase activity completely, and NaNO3 supplied additional nitrate to the leaves. However, when both were applied together, either through the xylem or as sprays, NO3- accumulated in the leaves of well-irrigated plants, as well as in those subjected to half- or whole-root drought stress. Such artificially induced NO3- accumulation in leaves significantly decreased the net photosynthetic rate, stomatal conductance, and rate of transpiration at approx. 12.00 h following the application, compared to controls supplied with deionised water. Net photosynthesis, stomatal conductance, and transpiration rate were negatively correlated with the foliar concentration of NO3-. None of the treatments influenced leaf temperatures or sub-stomatal CO2 concentrations, indicating that the decrease in net photosynthesis was not due to stomatal limitation. It is concluded that low foliar NO3- concentrations are a characteristic of the species, and important for efficient photosynthesis in apple.
DOI	10.1080/14620316.2008.11512403
收录类别	SCIE
ISSN	1462-0316
语种	英语
WOS研究方向	Agriculture
WOS类目	Horticulture
WOS记录号	WOS:000257844000007
出版者	TAYLOR & FRANCIS LTD
原始文献类型	Article
EISSN	2380-4084
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.lzufe.edu.cn/handle/39EH0E1M/34546
专题	农林经济管理学院
作者单位	1.Chinese Acad Sci, Wuhan Bot Garden, Wuhan 430074, Peoples R China; 2.Gansu Forestry Surveying & Planning Inst, Lanzhou 730020, Peoples R China; 3.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China; 4.Lanzhou Commercial Coll, Lanzhou 730020, Peoples R China
推荐引用方式 GB/T 7714	Zhao, J. Y.,Dai, Z. W.,Li, S. H.,et al. Artificially-induced leaf nitrate accumulation affects photosynthesis in micropropagated apple plants with different water supply[J]. JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY,2008,83(4):435-440.
APA	Zhao, J. Y.,Dai, Z. W.,Li, S. H.,&Kong, Y..(2008).Artificially-induced leaf nitrate accumulation affects photosynthesis in micropropagated apple plants with different water supply.JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY,83(4),435-440.
MLA	Zhao, J. Y.,et al."Artificially-induced leaf nitrate accumulation affects photosynthesis in micropropagated apple plants with different water supply".JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY 83.4(2008):435-440.