Limited Nitrogen and Plant Growth Stages Discriminate Well Nitrogen Use, Uptake and Utilization Efficiency in Popcorn

Khan, Shahid; Júnior, Antônio Teixeira do Amaral; Ferreira, Fernando Rafael Alves; Kamphorst, Samuel Henrique; Gonçalves, Gabriel Moreno Bernardo; Freitas, Marta Simone Mendonça; Silveira, Vanildo; Filho, Gonçalo A. de Souza; Amaral, José Francisco Teixeira do; Smith, Ricardo Enrique Bresssan; Khalil, Iftikhar Hussain; Vivas, Janieli Maganha Silva; Souza, Yure Pequeno de; Peçanha, Diego Alves

doi:10.3390/plants9070893

Cited by 12 publications

(5 citation statements)

References 31 publications

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“…Previous studies showed that there are significant differences in low nitrogen tolerance among species or genotypes within a species. Dry weight or relative biomass or is often used as an indicator of plant tolerance to low nutrition stress [53,54]. In this study, the differences in growth performance between the two sesame varieties confirmed our result as previously described that ZZ is more tolerant to low nitrogen stress than MD, and ZZ had the higher N absorption and translocation capability than MD (Table 1).…”

Section: Discussionsupporting

confidence: 91%

Transcriptome analysis of sesame (Sesamum indicum L.) reveal the LncRNAs and mRNAs regulatory network responding to low nitrogen stress

Zhang,

Li,

Tian

et al. 2024

Preprint

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Background Nitrogen is one of the important factors restricting the development of sesame planting and industry in China. Cultivating sesame varieties tolerant to low nitrogen is an effective way to solve the problem of crop nitrogen deficiency. Up to date, the mechanism of low nitrogen tolerance in sesame has not been elucidated at the transcriptional level. Result In this study, two sesame varieties Zhengzhi HL05 (ZZ, nitrogen efficient) and Burmese prolific (MD, nitrogen inefficient) in low nitrogen were used for RNA-sequencing. A total of 3964 DEGs and 221 DELs were identified in two sesame varieties at 3d and 9d after low nitrogen stress. Among them, 1227 genes related to low nitrogen tolerance are mainly located in amino acid metabolism, starch and sucrose metabolism and secondary metabolism, and participate in the process of transporter activity and antioxidant activity. In addition, a total of 209 pairs of lncRNA-mRNA were detected, including 21 pairs of trans and 188 cis. WGCNA analysis divided the obtained genes into 29 modules; phenotypic association analysis identified 3 low-nitrogen response modules; through lncRNA-mRNA co-expression network, a number of hub genes and cis / trans regulatory factors were identified in response to response low-nitrogen stress including GS1-2, PAL, CHS, CAB21 and transcription factors MYB54, MYB88 and NAC75 and so on. As a trans regulator, lncRNA MSTRG.13854.1 affects the expression of some genes related to low nitrogen response by regulating the expression of MYB54, thus responding to low nitrogen stress. Conclusion Combining WGCNA and co-expression analysis, consistently low nitrogen responsive candidate genes and lncRNAs were identified. In the co-expression networks responding to low nitrogen stress, some TFs were targeted by the lncRNAs, which further regulated the low nitrogen tolerance-related functional transcripts. Our research is the first to provide a more comprehensive understanding of DEGs involved in low nitrogen stress of sesame at transcriptome level. These results may reveal insights into the molecular mechanisms of low nitrogen tolerance in sesame and provide diverse genetic resources involved in low nitrogen tolerance research.

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Section: Discussionsupporting

confidence: 91%

Transcriptome analysis of sesame (Sesamum indicum L.) reveal the LncRNAs and mRNAs regulatory network responding to low nitrogen stress

Zhang,

Li,

Tian

et al. 2024

Preprint

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“…In general, the N limitation in the soil caused greater discrimination between the genotypes studied and resulted in higher heterosis estimates in this environment. This is associated with the fact that in this condition, the genotypes have greater differentiation for the traits studied, which has already been reported by other studies with common corn [67,68] and popcorn [27]. Therefore, the selection of genotypes in this condition may be more effective in obtaining a high genetic variance.…”

Section: What Is the Best Strategy For Conducting Popcorn Breeding To...supporting

confidence: 63%

“…The analysis was performed at the specific location on the leaf where c rophyll fluorescence emission and gas exchange were evaluated. The two nitrogen (N) availability conditions were based on 100% N (control condition, 224.09 mg L −1 ) and 10% N (treatment, 22.41 mg L −1 ), as established by Khan et al [27], as being the ideal contrasting N levels to better discriminate popcorn genotypes for NUE and other morphophysiological traits. The solutions used were based on the modified Hoagland and Arnon [72].…”

Section: Leaf Pigmentsmentioning

confidence: 99%

“…The authors' conclusion was that both additive and non-additive effects contribute to the expression of NUE, along with the influence of the female parent, which is evident from the reciprocal effect's significance. More recently, to understand the physiological mechanisms and proteomic profile of popcorn genotypes grown under different N availability conditions, Khan et al [27] and Khan et al [28] evaluated two contrasting lines for NUE together with their hybrid. According to the authors, the interaction between proteins related to the synthesis of L-ascorbate peroxidase and ferredoxin-nitrite reductase showed great importance in the expression of NUE for the species Zea mays everta.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the Potential of Heterosis to Improve Nitrogen Use Efficiency in Popcorn Plants

Santos

Júnior

Bispo

et al. 2023

Plants

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Nitrogen is crucial for plant growth and development, and improving nitrogen use efficiency (NUE) is a viable strategy for reducing dependence on nitrogen inputs and promoting sustainability. While the benefits of heterosis in corn are well known, the physiological mechanisms underlying this phenomenon in popcorn are less understood. We aimed to investigate the effects of heterosis on growth and physiological traits in four popcorn lines and their hybrids under two contrasting nitrogen conditions. We evaluated morpho-agronomic and physiological traits such as leaf pigments, the maximum photochemical efficiency of PSII, and leaf gas exchange. Components associated with NUE were also evaluated. N deprivation caused reductions of up to 65% in terms of plant architecture, 37% in terms of leaf pigments, and 42% in terms of photosynthesis-related traits. Heterosis had significant effects on growth traits, NUE, and foliar pigments, particularly under low soil nitrogen conditions. N-utilization efficiency was found to be the mechanism favoring superior hybrid performance for NUE. Non-additive genetic effects were predominant in controlling the studied traits, indicating that exploring heterosis is the most effective strategy for obtaining superior hybrids to promote NUE. The findings are relevant and beneficial for agro farmers seeking sustainable agricultural practices and improved crop productivity through the optimization of nitrogen utilization.

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“…Over time, the reduced N in-SDS distribution in roots indicated a weakened ability of roots to grow and gradually stop, with N being used for respiration, thereby promoting N uptake ( Jiang et al., 2023 ). Plants obtained more vital nutrient absorption abilities in the later stages than in the earlier stages ( Khan et al., 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Deciphering the impact of nitrogen morphologies distribution on nitrogen and biomass accumulation in tobacco plants

Li,

Jiang,

Ahmed

et al. 2024

Front. Plant Sci.

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Background and aimsNitrogen (N) distribution in plants is intricately linked to key physiological functions, including respiration, photosynthesis, structural development, and nitrogen storage. However, the specific effects of different N morphologies on N accumulation and plant growth are poorly understood. Our research specifically focused on determining how different N morphologies affect N absorption and biomass accumulation.MethodsThis study elucidated the impact of different application rates (CK: 0 g N/plant; T1: 4 g N/plant; T2: 8 g N/plant) of N fertilizer on N and biomass accumulation in tobacco cultivars Hongda and K326 at different growth stages.ResultsOur findings emphasize the critical role of N distribution in various plant parts, including leaves, stems, and roots, in determining the complex mechanisms of N and biomass accumulation in tobacco. We found that in relation to total N, a greater ratio of water-soluble N (Nw) in leaves facilitated N accumulation in leaves. In contrast, an increased ratio of SDS (detergent)-insoluble N (Nin-SDS) in leaves and non-protein N (Nnp) in roots hindered this increase. Additionally, our results indicate that a greater proportion of Nnp in leaves has a negative impact on biomass accumulation in leaves. Furthermore, elevated levels of Nin-SDS, Nw, and Nnp in roots, and Nnp in leaves adversely affected biomass accumulation in tobacco leaves. The Hongda cultivar exhibited greater biomass and N accumulation abilities as compared to K326.ConclusionsOur findings highlight the significant role of distribution of N morphologies on plant growth, as well as N and biomass accumulation in tobacco plants. Understanding N distribution allows farmers to optimize N application, minimizing environmental losses and maximizing yield for specific cultivars. These insights advance sustainable agriculture by promoting efficient resource use and reducing environmental impact.

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Limited Nitrogen and Plant Growth Stages Discriminate Well Nitrogen Use, Uptake and Utilization Efficiency in Popcorn

Cited by 12 publications

References 31 publications

Transcriptome analysis of sesame (Sesamum indicum L.) reveal the LncRNAs and mRNAs regulatory network responding to low nitrogen stress

Transcriptome analysis of sesame (Sesamum indicum L.) reveal the LncRNAs and mRNAs regulatory network responding to low nitrogen stress

Exploring the Potential of Heterosis to Improve Nitrogen Use Efficiency in Popcorn Plants

Deciphering the impact of nitrogen morphologies distribution on nitrogen and biomass accumulation in tobacco plants

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