Photosynthesis in Poor Nutrient Soils, in Compacted Soils, and under Drought

Morales, Fermı́n; Pavlovič, Andrej; Abadı́a, Anunciación; Abadı́a, Javier

doi:10.1007/978-3-319-93594-2_13

Cited by 23 publications

(26 citation statements)

References 202 publications

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“…Soil conditions determine leaf metabolism, and particularly photosynthetic metabolism [107]. Among those soil characteristics, it should be remarked the soil volume able to be explored by roots related to its compactness and soil physicochemical properties (nutrient and toxic elements composition and its capacity to hold and release water and nutrients).…”

Section: Impoverished Soilsmentioning

confidence: 99%

“…Commonly, photosynthesis responds to those stresses slower than does growth. In compacted soils, under drought or in soils poor in nutrients, photosynthesis is impaired because of different factors [107]. In P-deficient leaves and under drought (the latter only in some species), chlorophyll (Chl) remains fairly constant.…”

Section: Impoverished Soilsmentioning

confidence: 99%

“…A low stomatal aperture limits photosynthesis under a variety of stress factors. Thus, it is commonly reported in response to drought and widely documented in compacted soil-grown plants or in those soils inducing the deficiencies of the macronutrients K and P, and the micronutrients Zn and Cu [107]. When drawing conclusions about stomatal limitations to photosynthesis, based simply on low stomatal conductance or low transpiration rates, one must be wary.…”

Section: Impoverished Soilsmentioning

confidence: 99%

“…Once the CO 2 molecules cross the sub-stomatal cavity, they need to travel across the different layers of leaf cells, encountering different barriers, to reach the chloroplast Rubisco enzyme. Under drought and limiting N and Mn, the mesophyll conductance to CO 2 limits the photosynthetic rates [107]. An impaired photochemistry clearly limits CO 2 fixation in leaves affected by Fe deficiency.…”

Section: Impoverished Soilsmentioning

confidence: 99%

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Photosynthetic Metabolism under Stressful Growth Conditions as a Bases for Crop Breeding and Yield Improvement

Morales

Ancín

Fakhet

et al. 2020

Plants

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114

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Increased periods of water shortage and higher temperatures, together with a reduction in nutrient availability, have been proposed as major factors that negatively impact plant development. Photosynthetic CO2 assimilation is the basis of crop production for animal and human food, and for this reason, it has been selected as a primary target for crop phenotyping/breeding studies. Within this context, knowledge of the mechanisms involved in the response and acclimation of photosynthetic CO2 assimilation to multiple changing environmental conditions (including nutrients, water availability, and rising temperature) is a matter of great concern for the understanding of plant behavior under stress conditions, and for the development of new strategies and tools for enhancing plant growth in the future. The current review aims to analyze, from a multi-perspective approach (ranging across breeding, gas exchange, genomics, etc.) the impact of changing environmental conditions on the performance of the photosynthetic apparatus and, consequently, plant growth.

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Section: Impoverished Soilsmentioning

confidence: 99%

Section: Impoverished Soilsmentioning

confidence: 99%

Section: Impoverished Soilsmentioning

confidence: 99%

Section: Impoverished Soilsmentioning

confidence: 99%

See 2 more Smart Citations

Photosynthetic Metabolism under Stressful Growth Conditions as a Bases for Crop Breeding and Yield Improvement

Morales

Ancín

Fakhet

et al. 2020

Plants

Self Cite

114

View full text Add to dashboard Cite

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“…Iron deficiency leads to a significant decrease of net CO 2 , assimilation rate (A) and stomatal conductance (Ci) (Devadasu et al, ; Wang et al, ). Several authors indicated that iron deficiency has generally a negative effect on the photosynthetic mechanism and specifically on net photosynthetic rate and the gas exchange provided by the stomata (Morales, Pavlovič, Abadía, & Abadía, ).…”

Section: Discussionmentioning

confidence: 99%

Biodiversity within Medicago truncatula genotypes toward response to iron deficiency: Investigation of main tolerance mechanisms

Kallala

M’sehli

Jelali

et al. 2019

Plant Species Biology

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Iron (Fe) deficiency is one of the major environmental stresses affecting plant production in the world. The selection of tolerant genotypes is considered an effective remediation strategy for this stress. The present study was carried out in order to investigate the biodiversity within Medicago truncatula plants in response to Fe deficiency, to identify tolerant genotypes and to assess the main tolerance mechanisms. To do this, a screening test was performed on 20 M. truncatula genotypes cultivated in minimal medium. Biometric and physiological markers were analyzed, including plant biomass, chlorophyll and root architecture. Results showed a biodiversity among the 20 genotypes. Interestingly, Fe deficiency tolerance was highest in TN8.20 and A17 genotypes. However, the lowest tolerance behavior was observed in TN1.11 and TN6.18. In order to investigate the main tolerance mechanisms, an experiment was conducted in the hydroponic system on already selected genotypes. Assessment of Fe deficiency tolerance was performed mainly on plant growth parameters, Fe (III)‐chelate‐reductase activity, rhizosphere acidification and antioxidant system defense. The relative better tolerance of A17 and TN8.20 to Fe deficiency was positively correlated with their capacity to maintain higher Fe‐acquisition efficiency in roots via rhizosphere acidification and the stimulation of Fe (III)‐chelate‐reductase activity. Moreover, tolerant genotypes showed the lowest decreases in chlorophyll content and photosynthetic activity (CO2 assimilation) compared to the sensitive ones. The efficiency of antioxidant capacity of the tolerant genotypes was revealed in stimulation of catalase (CAT) and peroxidase (POX) activities as well as accumulation of polyphenols, leading to the maintenance of cell integrity under Fe deficiency.

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