Drought and nitrogen stress effects and tolerance mechanisms in tomato: a review

Machado, J.A.T.; Fernandes, A.P.G.; Fernandes, Tania; Heuvelink, E.; Vasconcelos, Marta W.; Carvalho, S.M.P.

doi:10.1016/b978-0-12-822916-3.00014-7

Cited by 12 publications

(11 citation statements)

References 196 publications

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“…Lobos et al (2016) demonstrated that although severe water limitation decreased fruit weight and crop production, the imposition of a 25% reduction in water did not negatively influence fruit quality and levels of antioxidants in blueberries. In the present study, data on total production (kg of fruits for four plots) are limited, although yield did not show significant differences between R1 and R2, a greater decrease was evident in Lungo (199 kg in L-R1 vs 182 in R2) and the weight of 100 fruits was significantly lower in R2 Lungo in comparison to R1 Lungo, in agreement with the fact that when fruit water accumulation is reduced, such as under water deficit, tomato fruit weight is decreased (Machado et al, 2022). It is also worth noting that the stress led to a significant upregulation of a gene coding for a sucrose synthase in fruits collected from R2 plants, in agreement with previous works looking at the gene expression of homologous genes in soybean and rice upon drought conditions (Du et al, 2020).…”

Section: Discussionsupporting

confidence: 57%

Impact of irrigation water deficit on two tomato genotypes grown under open field conditions: From the root-associated microbiota to the stress responses

Sillo

Marino

Franchi³

et al. 2022

Ital J Agronomy

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In the context of the climate change scenario in the Mediterranean, natural root-microorganism associations have an impact on the resilience and productivity of crops, and the exploitation of these interactions represents innovative, cost-effective and sustainable crop adaptation strategies. An open field experiment with two commercial Italian tomato cultivars was performed. The soil bacterial communities associated with the two commercial Italian tomato genotypes were characterized alongside their physiological and molecular responses under wellwatered and moderate water deficit (100% and 75% of crop evapotranspiration) treatments. The two genotypes showed contrasting responses to water deficit, primarily through diverse rhizosphere microbiota recruitment under the two irrigation treatments. Highlights - Two tomato genotypes were studied under water deficit in a pilot field trial. - The two genotypes responded differently to water stress from eco-physiological and transcriptomic points of view. - The two genotypes recruited diverse root-associated microbiota, particularly under water deficit.

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Section: Discussionsupporting

confidence: 57%

Impact of irrigation water deficit on two tomato genotypes grown under open field conditions: From the root-associated microbiota to the stress responses

Sillo

Marino

Franchi³

et al. 2022

Ital J Agronomy

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“…ABA-dependent pathways of stress response are implicated in both drought and nitrogen deficiency (Machado et al, 2022). Interestingly, 10 genes encoding PYR/PYL ABA receptors were differentially expressed in T270 root, most of them downregulated, compared to only 2 in T250, suggesting that repression of expression of PYLs may contribute to stress signal desensitization (Ali et al, 2021) in T270.…”

Section: Discussionmentioning

confidence: 99%

“…Drought and N availability are perceived by root systems, leading to modifications of root architecture, with tomato primary root growth favored over lateral root development under water deficit, and a general inhibition of root growth in the case of low N (Abenavoli et al, 2016;Machado et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic and splicing changes underlying tomato responses to combined water and nutrient stress

et al. 2022

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Tomato is a horticultural crop of high economic and nutritional value. Suboptimal environmental conditions, such as limited water and nutrient availability, cause severe yield reductions. Thus, selection of genotypes requiring lower inputs is a goal for the tomato breeding sector. We screened 10 tomato varieties exposed to water deficit, low nitrate or a combination of both. Biometric, physiological and molecular analyses revealed different stress responses among genotypes, identifying T270 as severely affected, and T250 as tolerant to the stresses applied. Investigation of transcriptome changes caused by combined stress in roots and leaves of these two genotypes yielded a low number of differentially expressed genes (DEGs) in T250 compared to T270, suggesting that T250 tailors changes in gene expression to efficiently respond to combined stress. By contrast, the susceptible tomato activated approximately one thousand and two thousand genes in leaves and roots respectively, indicating a more generalized stress response in this genotype. In particular, developmental and stress-related genes were differentially expressed, such as hormone responsive factors and transcription factors. Analysis of differential alternative splicing (DAS) events showed that combined stress greatly affects the splicing landscape in both genotypes, highlighting the important role of AS in stress response mechanisms. In particular, several stress and growth-related genes as well as transcription and splicing factors were differentially spliced in both tissues. Taken together, these results reveal important insights into the transcriptional and post-transcriptional mechanisms regulating tomato adaptation to growth under reduced water and nitrogen inputs.

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“…Cabbage, head, Brassica oleracea var. capitata Evaluation of N harvest index, and selection criteria of growth parameters [46] Cassava, Manihot esculenta Genotype with improved N uptake was identified among 25 accessions, under low N conditions; Molecular analysis identified mechanisms for possible improved N uptake in efficient lines [18,122] Eggplant, Solanum melongena NUE efficient genotypes identified from germplasm collections and crosses [116,123] Lettuce, Lactuca sativa Evaluation of wild species, plasticity in response to environmental variables [46] Onion, Allium cepa NUE evaluation of landraces [118] Potato, Solanum tuberosum Identification of growth traits associated with NUE among a range of potato cultivars; Differential cultivar responses to N rates; cultivar selection and N efficiency under organic systems [12,46,83,124] Spinach, Spinacea oleracea Identification of QTLs for NUE [46] Tomato, Solanum lycopersicon High-NUE genotype identified among 14 landrace varieties; wild relative genotype identified with increased NUE under low N rates; Genotypes with improved NUE with potential use as rootstocks; greater N uptake in drought-tolerant cultivars [115,119,125,126]…”

Section: Crop Notes Referencesmentioning

confidence: 99%

Optimizing the Nitrogen Use Efficiency in Vegetable Crops

Valenzuela

2024

Nitrogen

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Nitrogen (N) is the most limiting nutrient for the production of vegetable crops, but anthropogenic sources pose risks due to its transformation into several reactive forms and movement throughout the environment. The bulk of the N research to date to improve Nitrogen Use Efficiency (NUE) has followed a reductionist factorial approach focused on synthetic N application rates and crop growth response, under monocultures. The increased adoption of diversified cropping systems, organic N sources, and alternative management practices makes it more challenging to unravel N form transformation, movement, and crop uptake dynamics, in time and space. Here, based on a selected review of the recent literature, we propose a holistic approach of nutrient management to highlight key management and production variables as well as multilevel cropping system, genetic, environmental, ecological, and socioeconomic interactions to improve the N cycle and NUE. The best management strategies to improve NUE include both organic and inorganic N rate calibration studies, germplasm selection, crop rotations, identification of nutrient x nutrient interactions, and pest and water management. Agroecological practices that may improve NUE include vegetational diversification in time and space, integrated crop–livestock systems, conservation tillage, organic amendment inputs, legume-based cropping systems, as well as a landscape approach to nutrient management.

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Drought and nitrogen stress effects and tolerance mechanisms in tomato: a review

Cited by 12 publications

References 196 publications

Impact of irrigation water deficit on two tomato genotypes grown under open field conditions: From the root-associated microbiota to the stress responses

Impact of irrigation water deficit on two tomato genotypes grown under open field conditions: From the root-associated microbiota to the stress responses

Transcriptomic and splicing changes underlying tomato responses to combined water and nutrient stress

Optimizing the Nitrogen Use Efficiency in Vegetable Crops

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