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. 2019 Dec 6;71(6):2098–2111. doi: 10.1093/jxb/erz538

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© The Author(s) 2019. Published by Oxford University Press on behalf of the Society for Experimental Biology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1. — Proline is a potential source of nitrogen remobilized from source leaves at the vegetative stage in B. napus. (A) Chlorophyll and (B) soluble protein contents. (C) Total carbon and (D) total nitrogen contents. (E, F) qPCR analysis of BnaCab and BnaSAG12 genes. (G, H) Glutamine and proline contents from four leaf ranks having a different sink/source balance at the vegetative stage (60 DAS). Leaves were harvested 3 h after the beginning of the illumination period. Values are the means ±SD of 3–6 independent biological replicates. Different letters indicate that mean values are significantly different (P-value <0.05) between the different leaf ranks. Overall amino acid analysis of the four leaf ranks is listed in Supplementary Table S1. (This figure is available in colour at JXB online.)