Exogenous abscisic acid promotes the nitrogen use efficiency of<i>Brassica napus</i>by increasing nitrogen remobilization in the leaves

Han, Yongliang; Liao, Jiayuan; Yu, Yin; Song, Haixing; Rong, Nan; Guan, Chunyun; Lepo, Joe Eugene; Zhang, Zhenhua

doi:10.1080/01904167.2017.1380821

Cited by 12 publications

(5 citation statements)

References 27 publications

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“…Thus, improving NUE is essential to ensure the environmental and economic sustainability of that crop production [12,13]. Breeding programs are largely focusing on NUtE in above-ground organs [14][15][16] and research on soil and below-ground processes are limited [17]. Yet, the root organ holds potential for NUpE improvement [18,19].…”

Section: Introductionmentioning

confidence: 99%

Oilseed Rape Cultivars Show Diversity of Root Morphologies with the Potential for Better Capture of Nitrogen

et al. 2021

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The worldwide demand for vegetable oils is rising. Oilseed rape (Brassica napus) diversifies cereal dominated crop rotations but requires important nitrogen input. Yet, the root organ is offering an untapped opportunity to improve the nitrogen capture in soil. This study evaluates three culture systems in controlled environment, to observe root morphology and to identify root attributes for superior biomass production and nitrogen use. The phenotypic diversity in a panel of 55 modern winter oilseed rape cultivars was screened in response to two divergent nitrate supplies. Upon in vitro and hydroponic cultures, a large variability for root morphologies was observed. Root biomass and morphological traits positively correlated with shoot biomass or leaf area. The activities of high-affinity nitrate transport systems correlated negatively with the leaf area, while the combined high- and low-affinity systems positively with the total root length. The X-ray computed tomography permitted to visualize the root system in pipes filled with soil. The in vitro root phenotype at germination stage was indicative of lateral root deployment in soil-grown plants. This study highlights great genetic potential in oilseed rape, which could be manipulated to optimize crop root characteristics and nitrogen capture with substantial implications for agricultural production.

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Section: Introductionmentioning

confidence: 99%

Oilseed Rape Cultivars Show Diversity of Root Morphologies with the Potential for Better Capture of Nitrogen

et al. 2021

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“…Accumulation of ABA in wheat induces the expression of NRT2 gene to promote nitrate uptake [27]. Exogenous ABA treatment can improve the yield and nitrogen use efficiency of B. napus [28]. BnSLAH3-3 were significantly upregulated about sixty times at 12 h in leaves while BnSLAH3-2, BnSLAH3-3 and BnSLAH3-3 were down-regulated in roots after ABA treatment.…”

Section: Discussionmentioning

confidence: 99%

Identification and Expression Analysis of SLAC/SLAH Gene Family in Brassica napus L.

Nan

Xie

Atif

et al. 2021

IJMS

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Slow type anion channels (SLAC/SLAHs) play important roles during anion transport, growth and development, abiotic stress responses and hormone responses in plants. However, there is few report on SLAC/SLAHs in rapeseed (Brassica napus). Genome-wide identification and expression analysis of SLAC/SLAH gene family members were performed in B. napus. A total of 23 SLAC/SLAH genes were identified in B. napus. Based on the structural characteristics and phylogenetic analysis of these members, the SLAC/SLAHs could be classified into three main groups. Transcriptome data demonstrated that BnSLAH3 genes were detected in various tissues of the rapeseed and could be up-regulated by low nitrate treatment in roots. BnSLAC/SLAHs were exclusively localized on the plasma membrane in transient expression of tobacco leaves. These results will increase our understanding of the evolution and expression of the SLAC/SLAHs and provide evidence for further research of biological functions of candidates in B. napus.

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“…Plant samples (1.0 g) were ground in a chilled mortar containing 6 ml of extraction buffer. The crude supernatant was analysed for NR, GS and NADH‐GOGAT activity according to the following methods: NR activity was determined by a modification of the method reported by Savidov and Lips (1997), GS activity was determined according to the method reported by Han et al (2017), and NADH‐GOGAT activity was determined by spectrometer as described by Liu et al (2016).…”

Section: Methodsmentioning

confidence: 99%

Nanoscale molybdenum oxide improves plant growth and increases nitrate utilisation in rice (Oryza sativa L.)

Zhang

Wang

Chen

et al. 2022

Food and Energy Security

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Nanoscale molybdenum oxide (nano‐MoO3) is widely used in industrial and environmental fields and its release to the environment is increasing. However, the potential effect of nano‐MoO3 on rice (Oryza sativa L.) seedling growth is unclear. Herein, the different impacts of vaired concentrations (0, 50, 100, 200 and 300 μg Mo L–1) of Na2MoO4 and nano‐MoO3 on the growth and nitrate (NO3–) utilisation of rice were investigated using hydroponics. The Mo concentration in roots and shoots, N metabolism enzyme activity, root morphology, root redox ability and root exudates were then analysed to understand the potential mechanisms of the growth impacts. Results showed that the Mo concentration in rice roots increased incrementally as the amount of Mo application increased, whereas different Mo sources did not affect the Mo concentration in shoots. Both Na2MoO4 and nano‐MoO3 promoted the growth and NO3– utilisation of rice. The promotion effects of higher nano‐MoO3 dosages were better than those of Na2MoO4. Nano‐MoO3 application significantly affected the activity of nitrate reductase (NR), glutamine synthetase (GS) and glutamate synthase (NADH‐GOGAT), which in turn promoted NO3– assimilation. Additionally, rice seedlings treated with nano‐MoO3 had a relatively high rice root volume, surface area, total absorption area, active absorption area, low‐molecular‐weight organic acids, root oxidation and reduction capacities. Based on these results, it is proposed that nano‐MoO3 facilitates rice growth and NO3– assimilation via the enhancement of nitrogen metabolism enzyme activity and the promotion of good root morphological and physiological characters with high root secretion concentration and redox ability. This study provides insights regarding the further application of nano‐MoO3 in agriculture enhancing N use efficiency and rice productivity.

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Exogenous abscisic acid promotes the nitrogen use efficiency ofBrassica napusby increasing nitrogen remobilization in the leaves

Cited by 12 publications

References 27 publications

Oilseed Rape Cultivars Show Diversity of Root Morphologies with the Potential for Better Capture of Nitrogen

Oilseed Rape Cultivars Show Diversity of Root Morphologies with the Potential for Better Capture of Nitrogen

Identification and Expression Analysis of SLAC/SLAH Gene Family in Brassica napus L.

Nanoscale molybdenum oxide improves plant growth and increases nitrate utilisation in rice (Oryza sativa L.)

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