Dynamic carbon allocation into source and sink tissues determine within-plant differences in carbon isotope ratios.
Dynamic carbon allocation into source and sink tissues determine within-plant differences in carbon isotope ratios.
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源组织和汇组织的动态碳分配决定了植物内碳同位素比率的差异
DOI:
10.1071/fp14152
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Werner C.
中科院分区:
文献类型:
--
作者:
Wegener F;Beyschlag W. ;Werner C.
Organs of C3 plants differ in their C isotopic signature (δ13C). In general, leaves are 13C-depleted relative to other organs. To investigate the development of spatial δ13C patterns, we induced different C allocation strategies by reducing light and nutrient availability for 12 months in the Mediterranean shrub Halimium halimifolium L. We measured morphological and physiological traits and the spatial δ13C variation among seven tissue classes during the experiment. A reduction of light (Low-L treatment) increased aboveground C allocation, plant height and specific leaf area. Reduced nutrient availability (Low-N treatment) enhanced C allocation into fine roots and reduced the spatial δ13C variation. In contrast, control and Low-L plants with high C allocation in new leaves showed a high δ13C variation within the plant (up to 2.5‰). The spatial δ13C variation was significantly correlated with the proportion of second-generation leaves from whole-plant biomass (R2 = 0.46). According to our results, isotope fractionation in dark respiration can influence the C isotope composition of plant tissues but cannot explain the entire spatial pattern seen. Our study indicates a foliar depletion in 13C during leaf development combined with export of relatively 13C-enriched C by mature source leaves as an important reason for the observed spatial δ13C pattern.
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影响因子:
3
作者:
Wegener F;Beyschlag W. ;Werner C.
通讯作者:
Werner C.
DOI:
--
发表时间:
1997
期刊:
American-Eurasian journal of botany
影响因子:
--
作者:
V. Terwilliger
通讯作者:
V. Terwilliger
影响因子:
9.4
作者:
Camille Bathellier;F. Badeck;P. Couzi;Sébastien Harscoët;Caroline Mauve;J. Ghashghaie
通讯作者:
J. Ghashghaie
影响因子:
4.9
作者:
C. Werner;A. Gessler
通讯作者:
C. Werner;A. Gessler
DOI:
10.1071/pp97159
发表时间:
1998-01-01
期刊:
AUSTRALIAN JOURNAL OF PLANT PHYSIOLOGY
影响因子:
--
作者:
Atkin, OK;Evans, JR;Siebke, K
通讯作者:
Siebke, K