Nitrogen-utilization efficiency during early deficiency after a luxury consumption is improved by sustaining nitrate reductase activity and photosynthesis in cotton plants

Guilherme, E. A.; Nascimento, Cristiano Silva do; Lobo, Ana Karla Moreira; Carvalho, Fernanda Torres de; Silveira, Joaquim Albenísio Gomes da

doi:10.1007/s11104-019-04214-7

Cited by 12 publications

(7 citation statements)

References 44 publications

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“…An increase in free amino acids and proteins has been observed in cotton leaves with increasing N supply, 56 consistent with findings in Leymus chinensis 53 . In N‐sufficient conditions, L. chinensis showed a sequential increase in the free amino acid content in the leaf, stem, and roots, until further N increase led to a slight decline 53 .…”

Section: Nitrogen Assimilation and Partitioning Processessupporting

confidence: 87%

“…However, under such conditions, a substantial amount of free amino acids is observed in the sink cells, such as roots, fruits, seeds, flowers, and younger leaves, indicating that N assimilation in roots is inadequate to meet the N metabolic requirements in leaves (Figure 3). 55 An increase in free amino acids and proteins has been observed in cotton leaves with increasing N supply, 56 consistent with findings in Leymus chinensis. 53 In N-sufficient conditions, L. chinensis showed a sequential increase in the free amino acid content in the leaf, stem, and roots, until further N increase led to a slight decline.…”

Section: Effects Of Nitrogen Status On Carbon and Nitrogen Partitioni...supporting

confidence: 85%

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The interplay of carbon and nitrogen distribution: Prospects for improved crop yields

2023

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Growth and productivity of plants primarily depend on the balanced distribution of carbon (C) and nitrogen (N) among different organs. Previous studies on crop improvement have focussed on the C or N assimilation and distribution. However, recent findings reveal that C and N form a complex integrated network and are often dependent on each other to affect crop productivity. The underlying physiological and molecular mechanisms involved in the coordinated distribution of C and N among different plant organs are yet to be fully uncovered. Crucial roles in regulating C and N balance are played by transporters that mediate their movement across different organs. In Cotton, which has an indeterminate growth pattern, source-sink assimilate distribution could be a major bottleneck impeding fibre productivity. This review summarises our current understanding of C and N transport mechanisms, explores and compares different physiological and molecular approaches involved in the C-N distribution cascade, including cotton and other plant species. A comprehensive understanding of these integrated regulatory mechanisms is crucial for improving crop yields and fibre productivity.

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Section: Nitrogen Assimilation and Partitioning Processessupporting

confidence: 87%

Section: Effects Of Nitrogen Status On Carbon and Nitrogen Partitioni...supporting

confidence: 85%

The interplay of carbon and nitrogen distribution: Prospects for improved crop yields

2023

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“…It assimilates ammonium into the amide position of glutamine ( Fig 8 ) [ 37 ]. In addition, the increased NR activity also correlated with enhanced NUE in cotton under N deficiency [ 38 , 39 ]. Our biochemical experiments also showed the positive relationship between the NR activity and NUE.…”

Section: Discussionmentioning

confidence: 99%

Transcriptome analysis reveals Nitrogen deficiency induced alterations in leaf and root of three cultivars of potato (Solanum tuberosum L.)

et al. 2020

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Nitrogen (N) is a key element for the production of potato. The N uptake efficiency, N use efficiency and increased N utilization efficiency can be decreased by N deficiency treatment. We performed this study to investigate the association between transcriptomic profiles and the efficiencies of N in potato. Potato cultivars “Yanshu 4” (short for Y), “Xiabodi” (cv. Shepody, short for X) and “Chunshu 4” (short for C) were treated with sufficient N fertilizer and deficient N fertilizer. Then, the growth parameters and tuber yield were recorded; the contents of soluble sugar and protein were measured; and the activities of enzymes were detected. Leaf and root transcriptomes were analyzed and differentially expressed genes (DEGs) in response to N deficiency were identified. The results showed that N deficiency decreased the nitrate reductase (NR), glutamine synthetase (GS) and root activity. Most of the DEGs between N-treated and N-deficiency participate the processes of transport, nitrate transport, nitrogen compound transport and N metabolism in C and Y, not in X, indicating the cultivar-dependent response to N deficiency. DEGs like glutamate dehydrogenase ( StGDH) , glutamine synthetase ( StGS) and carbonic anhydrase ( StCA) play key roles in these processes mentioned above. DEGs related to N metabolism showed a close relationship with the N utilization efficiency (UTE), but not with N use efficiency (NUE). The Major Facilitator Superfamily (MFS) members, like nitrate transporter 2.4 ( StNRT2 . 4) , 2.5 ( StNRT2 . 5) and 2.7 ( StNRT2 . 7) , were mainly enriched in the processes associated with response to stresses and defense, indicating that N deficiency induced stresses in all cultivars.

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“…These tools, based on 16S rRNA gene sequence analysis, aim to provide an initial understanding of the overall functional trends of microbiomes. Our findings indicate that the microbiome associated with roots exhibits heightened nitrate reduction capacity ( Figure 6A ), a crucial metabolic function for enhancing plant growth ( Guilherme et al, 2019 ). Similarly, microbiomes in seeds-P demonstrated increased activities related to sulfur oxidation reduction and iron reduction ( Figure 6C ), potentially influencing their growth and survival in soil ( Nakajima et al, 2019 ; Malviya et al, 2022 ).…”

Section: Resultsmentioning

confidence: 84%

Vertical transfer and functional characterization of cotton seed core microbiome

Wu,

Zhang,

Fan

et al. 2024

Front. Microbiol.

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IntroductionMicrobiome within plant tissues is pivotal for co-evolution with host plants. This microbiome can colonize the plant, with potential transmission via seeds between parents and offspring, affecting seedling growth and host plant adaptability to the environment.MethodsWe employed 16S rRNA gene amplicon analysis to investigate the vertical distribution of core microbiome in cotton seeds across ecological niches [rhizosphere, root, stem, leaf, seed and seed-P (parental seed)] of the three cotton genotypes.ResultsThe findings demonstrated a significant decrease in microbiome diversity and network complexity from roots, stems, and leaves to seeds. The microenvironment exerted a more substantial influence on the microbiome structure of cotton than the genotypes. The core endophytic microorganisms in cotton seeds comprised 29 amplicon sequence variants (ASVs) affiliated with Acidimicrobiia, Alphaproteobacteria, Bacilli, Bacteroidia, Clostridia, Gammaproteobacteria, and unclassified_Proteobacteria. These vertically transmitted taxa are widely distributed in cotton plants. Through 16S rRNA gene-based function prediction analysis of the cotton microbiome, we preliminarily understood that there are potential differences in metabolic capabilities and phenotypic traits among microbiomes in different microhabitats.DiscussionIn conclusion, this study demonstrated the crucial role of the microenvironment in influencing the cotton microbiome and offered insights into the structures and functions of the cotton seed microbiome, facilitating future crop yield enhancement through core seed microbiome regulation.

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Nitrogen-utilization efficiency during early deficiency after a luxury consumption is improved by sustaining nitrate reductase activity and photosynthesis in cotton plants

Cited by 12 publications

References 44 publications

The interplay of carbon and nitrogen distribution: Prospects for improved crop yields

The interplay of carbon and nitrogen distribution: Prospects for improved crop yields

Transcriptome analysis reveals Nitrogen deficiency induced alterations in leaf and root of three cultivars of potato (Solanum tuberosum L.)

Vertical transfer and functional characterization of cotton seed core microbiome

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