Short-Term Effect of Drought and Salinity on Growth and Mineral Elements in Wheat Seedlings

Hu, Yuegao; Burucs, Z.; Schmidhalter, Urs

doi:10.1080/01904160600975111

Cited by 36 publications

(25 citation statements)

References 27 publications

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“…To our knowledge, this is the first report of a comparison of maize seedling growth with N, P and K nutrient application individually or in combination under drought and well-watered conditions. Thus, the results here may suggest that supplying nutrients under deficient conditions could increase the drought tolerance of plants by increasing plant biomass for early growth vigour and establishment, which is in agreement with reports from the literature [9,10,31,34,35]. According to the literature [9], however, caution should be taken when considering an increase in the supply of nutrients to alleviate the adverse effects of drought stress only if the nutrient is present in the soil in insufficient amounts and the drought stress is not severe.…”

Section: Discussionsupporting

confidence: 82%

Interactive Effects of N-, P- and K-Nutrition and Drought Stress on the Development of Maize Seedlings

Studer

Schmidhalter

2017

Agriculture

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Abstract:Global climate change is likely to increase the risk of frequent drought. Maize, as the principal global cereal, is particularly impacted by drought. Nutrient supply may improve plant drought tolerance for better plant establishment during seedling growth stages. Thus, this study investigated the interactive effects of drought and the application of the nutrients N, P and K either individually or in combination. The maize seedlings were harvested between 12 and 20 days after sowing, and the leaf area, shoot fresh and dry weight and root dry weight were determined, and shoot water content and root/shoot dry weight ratio were calculated. Among the N, P and K fertilization treatments applied individually or in combination, the results showed that there was generally a positive effect of combined NPK and/or NP nutrient supply on shoot growth such as leaf area, shoot fresh and dry weight at day 20 after sowing under both well-watered and drought conditions compared with no nutrient supply. Compared with the effect of N and P nutrient supply, it seems that K was not limiting to plant growth due to the mineralogical characteristics of the illitic-chloritic silt loam used, which provided sufficient K, even though soil tests showed a low K nutrient status. Interestingly, the root/shoot ratio remained high and constant under drought regardless of NPK application, while it decreased with NPK applications in the well-watered treatment. This suggests that the higher root/shoot ratios with N, NP, PK and NPK under drought could be exploited as a strategy for stress tolerance in crop plants.

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Section: Discussionsupporting

confidence: 82%

Interactive Effects of N-, P- and K-Nutrition and Drought Stress on the Development of Maize Seedlings

Studer

Schmidhalter

2017

Agriculture

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“…So, the higher N uptake efficiency of some graft combinations can minimize or even eliminate yield losses owing to marginal soil fertility (Simonne et al 2010). However, under water-stress conditions, it has been shown that N uptake diminishes in soy (Glycine max) and rice (Oryza sativa) plants (Tanguilig et al 1987) and wheat (Triticum sp) (Hu et al 2006). Agreeing with these results, our data reflect a decline in the N concentration associated with the worst uptake under stress conditions only in cv.…”

Section: Discussionsupporting

confidence: 63%

How does grafting affect the ionome of cherry tomato plants under water stress?

Sánchez-Rodríguez

Leyva

Constán-Aguilar

et al. 2014

Soil Science and Plant Nutrition

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The response of grafted vegetables to stress conditions owing to the nutrient status may be different than that of self-rooted plants, depending mainly on the rootstock genotype. The aim of the present work is to determine the response of reciprocal grafts made between cherry tomato cultivars (Solanum lycopersicum) to moderate water stress, examining uptake and concentration of nutrient. The tomato cultivars Zarina (drought-tolerant) and Josefina (drought-sensitive) were reciprocal grafted and selfgrafted, and ungrafted were used as control. The total content and uptake fluxes of macro-and micronutrients were determined in leaves. Our results show that the use of drought-tolerant cv. Zarina like rootstocks (ZarxJos) showed improve ionome, with increases in nitrogen (N), phosphorus (P) and potassium (K) concentration and uptake fluxes, and an increase in iron (Fe) and copper (Cu) concentration and uptake under water stress. Besides, the vigorous root system of rootstocks is often capable of absorbing plant nutrients more efficently than scion root, and we have showed that cv. Zarina and ZarxJos develop a better radicular system. This result confirms the hypothesis that grafted plants on vigorous rootstocks can improve mineral nutrition and nutrient uptake with respect to ungrafted plants, especially under water stress conditions.

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“…Nitrogen is required by plants in large quantities and is essential in the biochemistry of non-enzymatic compounds such as coenzymes, photosynthetic pigments, secondary metabolites, and polyamines (Maathuis 2009). Under water-stress conditions, it has been showed that N uptake diminishes in soy and rice plants (Tanguilig et al 1987), wheat (Hu et al 2006), and beans (Zayed and Zeid 1997). The decline in N uptake can be attributed to a lower rate of transpiration and N transport from the root to the shoot (Alam 1999).…”

Section: Discussionmentioning

confidence: 98%

“…Several studies have demonstrated the effect of the species and genotype in the concentrations of nutrients (Alam 1999) while other studies indicate that nutrient uptake falls when water stress intensifies in plants such as rice, corn, soy, and wheat (Tanguilig et al 1987;Hu et al 2006). In tomato plants, there is evidence that factors such as salinity and light intensity affect nutrient uptake (Fernández-García et al 2004;Gent and Ma 1998).…”

Section: Introductionmentioning

confidence: 95%

Study of the ionome and uptake fluxes in cherry tomato plants under moderate water stress conditions

et al. 2010

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Nutritional imbalance under water-deficit conditions depresses plant growth by affecting nutrient uptake, transport, and distribution. The present work analyses the variations in the foliar concentrations of macro-and micronutrients as well as the transport of these nutrients in five cherry tomato cultivars under well-watered and moderately waterstressed conditions with the aim of establishing whether the ionome of the plants is related to the degree of sensitivity or tolerance to this type of stress. The results show a general reduction in growth together with a lower concentrations and uptake both of macro-as well as micronutrients in all the cultivars studied, except for cv. Zarina, which showed better growth and increased in concentrations and uptake nitrogen, phosphorus, magnesium, potassium, and chloride with respect to control plants. In conclusion, in this work, our results suggest that a better understanding of the role of the mineral elements in plant resistance to drought could improve fertilization in arid and semi-arid regions in order to increase the tolerance of plants grown under these conditions.

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Short-Term Effect of Drought and Salinity on Growth and Mineral Elements in Wheat Seedlings

Cited by 36 publications

References 27 publications

Interactive Effects of N-, P- and K-Nutrition and Drought Stress on the Development of Maize Seedlings

Interactive Effects of N-, P- and K-Nutrition and Drought Stress on the Development of Maize Seedlings

How does grafting affect the ionome of cherry tomato plants under water stress?

Study of the ionome and uptake fluxes in cherry tomato plants under moderate water stress conditions

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