Proteomic Analysis of Seedling Roots of Two Maize Inbred Lines That Differ Significantly in the Salt Stress Response

Cui, Da-Jian; Wu, Dandan; Liu, Jie; Li, Detao; Xu, Chunyan; Li, Song; Li, Peng; Zhang, Hua; Liu, Xu; Jiang, Chuan; Wang, Liwen; Chen, Tingting; Chen, Huabang; Zhao, Li

doi:10.1371/journal.pone.0116697

Cited by 43 publications

(37 citation statements)

References 36 publications

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“…Ouyang et al , 2007; Beritognolo et al , 2011), proteomic (e.g. Ma et al , 2012; Cui et al , 2015) or metabolomic (e.g. Widodo et al , 2009; Zhao et al , 2014) levels, but limited arguments advocate the reasoning of selecting such genotypes.…”

Section: Introductionmentioning

confidence: 99%

Evaluating physiological responses of plants to salinity stress

Negrão

Schmöckel

Tester

2016

Ann Bot

939

530

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Background Because soil salinity is a major abiotic constraint affecting crop yield, much research has been conducted to develop plants with improved salinity tolerance. Salinity stress impacts many aspects of a plant’s physiology, making it difficult to study in toto. Instead, it is more tractable to dissect the plant’s response into traits that are hypothesized to be involved in the overall tolerance of the plant to salinity.Scope and conclusions We discuss how to quantify the impact of salinity on different traits, such as relative growth rate, water relations, transpiration, transpiration use efficiency, ionic relations, photosynthesis, senescence, yield and yield components. We also suggest some guidelines to assist with the selection of appropriate experimental systems, imposition of salinity stress, and obtaining and analysing relevant physiological data using appropriate indices. We illustrate how these indices can be used to identify relationships amongst the proposed traits to identify which traits are the most important contributors to salinity tolerance. Salinity tolerance is complex and involves many genes, but progress has been made in studying the mechanisms underlying a plant’s response to salinity. Nevertheless, several previous studies on salinity tolerance could have benefited from improved experimental design. We hope that this paper will provide pertinent information to researchers on performing proficient assays and interpreting results from salinity tolerance experiments.

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Section: Introductionmentioning

confidence: 99%

Evaluating physiological responses of plants to salinity stress

Negrão

Schmöckel

Tester

2016

Ann Bot

939

530

View full text Add to dashboard Cite

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“…Moreover, the high salt tolerance capability in some maize inbred lines could be closely related to their ability to maintain high K + /Na + ratio, ion homeostasis, and membrane integrity under salt stress. (Cerda et al, 1995; Abbasi et al, 2015; Cui et al, 2015a). …”

Section: Introductionmentioning

confidence: 99%

Ability to Remove Na+ and Retain K+ Correlates with Salt Tolerance in Two Maize Inbred Lines Seedlings

Gao

et al. 2016

Front. Plant Sci.

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Maize is moderately sensitive to salt stress; therefore, soil salinity is a serious threat to its production worldwide. Here, excellent salt-tolerant maize inbred line TL1317 and extremely salt-sensitive maize inbred line SL1303 were screened to understand the maize response to salt stress and its tolerance mechanisms. Relative water content, membrane stability index, stomatal conductance, chlorophyll content, maximum photochemical efficiency, photochemical efficiency, shoot and root fresh/dry weight, and proline and water soluble sugar content analyses were used to identify that the physiological effects of osmotic stress of salt stress were obvious and manifested at about 3 days after salt stress in maize. Moreover, the ion concentration of two maize inbred lines revealed that the salt-tolerant maize inbred line could maintain low Na+ concentration by accumulating Na+ in old leaves and gradually shedding them to exclude excessive Na+. Furthermore, the K+ uptake and retention abilities of roots were important in maintaining K+ homeostasis for salt tolerance in maize. RNA-seq and qPCR results revealed some Na+/H+ antiporter genes and Ca2+ transport genes were up-regulated faster and higher in TL1317 than those in SL1303. Some K+ transport genes were down-regulated in SL1303 but up-regulated in TL1317. RNA-seq results, along with the phenotype and physiological results, suggested that the salt-tolerant maize inbred line TL1317 possesses more rapidly and effectively responses to remove toxic Na+ ions and maintain K+ under salt stress than the salt-sensitive maize inbred line SL1303. This response should facilitate cell homoeostasis under salt stress and result in salt tolerance in TL1317.

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“…This result corroborates earlier findings where grain yield of maize was affected by shade at kernel setting stage (Andrade et al, 2002). A recent study also reported that the shade from trees may affect grain formation negatively by decreasing kernel rows per head and kernels per row (Cui et al, 2015), although additional negative effects from root competition is expected in agroforestry systems (Callaway and Walker, 1997). An interesting trend in Grevillea-maize system was that there was a significant increase in yield for every addition of fertilizer, suggesting that fertilizer rates other than…”

Section: Crop Response To N and P Fertilization Differs In Agroforestsupporting

confidence: 91%

Sustainable intensification of smallholder farming systems in Ethiopia : what roles can scattered trees play?

Sida

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Scattered trees dominate smallholder agricultural landscapes in Ethiopia, as in large parts of sub-Saharan Africa (SSA). While the integration of scattered trees with crops could provide a viable pathway for sustainable intensification of these farming systems, they also lead to tradeoffs. Trade-off minimization and benefit maximization from these trees in the system require the processes that underlie tree-crop interactions to be unravelled. This study explored treebased pathways for the sustainable intensification (SI) smallholder crop production systems in contrasting agroecologies of Ethiopia. Combination of methodologies from agronomy, socioeconomics and conservation sciences were utilized to understand the potential roles of scattered trees in smallholder farming systems. Results indicated that farmers maintained on-farm trees because of their direct timber, fencing, fuelwood, and charcoal production values, regardless of their effect on crop productivity. A trade-off analysis revealed that economic gains from trees were not large enough to compensate for tree-induced crop yield penalties in tree-crop mixed farming systems. Under farmers' practices, most scattered trees generally had a significant negative effect on maize yield. For example, mean maize grain yields were 59%, 42% and 26% less under the canopies of Cordia africana, Croton macrostachyus and Acacia tortilis, respectively, compared with corresponding open field yields. The yield reductions dropped to as low as 5% under 'good agronomic practices', such as early planting, variety selection, improved weed management, fine seedbed preparation and higher rates of nitrogen fertilizer.Similar yield reduction was observed in maize under the canopy of Grevillea robusta. Application of nitrogen and phosphorus fertilizers to under canopy maize in Grevillea robustaand Acacia tortilis improved crop yields, compared with non-fertilized maize under the canopies of these tree species. However, recommended rates of nitrogen and phosphorus vi fertilizers produced significantly less maize yields compared with the open fields. Faidherbia albida is an exceptional scattered tree species that improved soil water, nitrogen and phosphorus use efficiencies, leading to significantly higher yields in wheat gunder tree crown. Available N was 35-55% larger close to the crowns of Faidherbia compared with open fields, apparently contributing as much as 64 kg ha -1 yr -1 mineral N. In addition, this tree significantly reduced photosynthetically active radiation (PAR), reaching the canopy to optimum levels for wheat growth and development. Under the crowns, midday temperature was about 6 o C less compared with nearby open fields. Regardless of the triple-win effects (crop production, adaptation and mitigation) of this tree species, over-utilization caused tree population decline. Under the current management, Faidherbia population would decline to a critical density of less than one tree ha -1 within six decades. The current study underlined that conservation of scattered trees ...

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Proteomic Analysis of Seedling Roots of Two Maize Inbred Lines That Differ Significantly in the Salt Stress Response

Cited by 43 publications

References 36 publications

Evaluating physiological responses of plants to salinity stress

Evaluating physiological responses of plants to salinity stress

Ability to Remove Na+ and Retain K+ Correlates with Salt Tolerance in Two Maize Inbred Lines Seedlings

Sustainable intensification of smallholder farming systems in Ethiopia : what roles can scattered trees play?

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