Dear colleagues,
According to our data on orchids and pyroloids and published data of a range of researchers there is a significant enrichment in 13C in roots and rhizomes vs leaves in partially mycoheterotrophic (green mixotrophic) plants. It can mirror different carbon sources for those organs - fungal carbon gain for underground parts and photosynthesis for leaves. I`ve failed to find the data on 13C distribution within tissues of fully autotrophic (not presumably mixotrophic) green plants e.g. arbuscular mycorrhizal or non-mycorrhizal rhizome-forming species. Do they have the same as for mixotrophs pattern of 13C allocation within the plant, or not?
So I`ll be very grateful for sharing any information on the topic.
With thanks,
Elena
Dear Dr Srivastava,
Great thanks for your response and useful files.
With best regards,
Elena
Would spend attention on N stable isotopes for the matter. For 13C the respiratory source and the lignin content are possible variation sources but fungal population effects are less evident, Article Carbon isotope fractionation during decomposition of plant m...
I add a series of Keeling's plots that could help to clarify the need of multiple CO2 samples in a single plant for different respiration equilibria, tahnks to Kevin Tu page in http://landflux.org/Research.php
Dear Elena,
Find publication:
Sikolia, S.F., 2017: Influence of climatic factors on the δ13C values of the C3, C4 and CAM dicot species (vegetation) of the Centrospermeae along altitudinal gradient in Western region of Kenya. Journal of Research in Environmental and Earth Sciences, 3(5): 34-46, which discusses various sources of 13CO2 and their respective δ13C values. Thanks.
@ Stephen Fedha
Dear Stephen,
Thanks for your response and publication citation.
With best regards,
Elena
@ Guido Bongi
Dear Guido,
Greatest thanks for valuable sources and recommendations. We are working with a pair 13C -15N but until now our attention was focused on leaves only. Mixotrophic plants according to our data show constant significant enrichment in 15N but the values are rather variable compared to 13C for any plant species and the same habitat.
With best regards,
Elena
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