NDLI: Effects of organic acids on uptake of nutritional elements and Al forms in Brassica napus L. under Al stress as analyzed by $^{27}$Al-NMR

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Brazilian Journal of Botany : Volume 38

Brazilian Journal of Botany : Volume 37

Brazilian Journal of Botany : Volume 36

Effects of organic acids on uptake of nutritional elements and Al forms in Brassica napus L. under Al stress as analyzed by $^{27}$Al-NMR

Content Provider	Springer Nature Link
Author	Wu, Yuhuan Xu, Gendi Wang, Yueping Liu, Peng Liu, Dai Zhang, Yi
Copyright Year	2015
Abstract	Hydroponic experiments were performed to investigate the effects of exogenous organic acids on Al accumulation and Al forms in two rape genotypes, Heza No. 7 (Al-tolerant) and Zhongnongyou No. 6 (Al-sensitive) under Al stress. Results showed there exhibited diverse effects on different varieties of rape. Citrate can significantly improve the absorption of Al in Heza No. 7. Al content in Al + citrate increased by 50 % compared with single-Al treatment. In Zhongnongyou No. 6, the highest Al content was observed under mixed treatment with citrate and malate. Organic acids significantly promoted the absorption of Mg, Ca, K, and Fe in roots of Zhongnongyou No. 6, but there were fewer effects on elemental absorption by Heza No. 7. Al-NMR results showed that Al in rape root mainly existed in the form [AlO$_{4}$Al$_{12}$(OH)$_{24}$(H$_{2}$O)$_{12}$]$^{7+}$, with a chemical shift of about 63 ppm. Upon addition of exogenous organic acids, Al mainly existed as non-phytotoxic forms of Al–citrate and Al–malate complexes and showed fewer Al–F complex, Al(OH) 2 4+ , and Al(OH) 2 4+ species. This finding can explain why rape root accumulates large amounts of Al upon treatment with exogenous organic acids but shows no serious toxicity symptoms. We thus conclude that Al–citrate and Al–malate play important roles during Al detoxification in rape.
Starting Page	1
Ending Page	8
Page Count	8
File Format	PDF
ISSN	01008404
Journal	Brazilian Journal of Botany
Volume Number	39
Issue Number	1
e-ISSN	18069959
Language	English
Publisher	Springer International Publishing
Publisher Date	2015-08-18
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rape (Brassica campestris L.) Aluminum toxicity Plant Systematics/Taxonomy/Biogeography Nutritional elements Al form Exogenous organic acid
Content Type	Text
Resource Type	Article
Subject	Plant Science

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