Ecophysiology of C3 and C4 plants in terms of responses to extreme soil temperatures

Júnior, Rogério de Souza Nóia; Amaral, Genilda Canuto; Pezzopane, José Eduardo Macedo; Xavier, Talita Miranda Teixeira

doi:10.1007/s40626-018-0120-7

Cited by 20 publications

(9 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High soil temperatures may cause a range of planning impacts: the inhibition of root growth, death of root tips, disturbances in the uptake of minerals and water, poorer colonization by beneficial microorganisms, increased colonization by pathogenic organisms, and changes in respiration intensity [20,40,41]. Moreover, extreme temperatures in soil can negatively affect photosynthesis and the relative water content of leaves [42]. Soil temperature can also generate stress conditions in the winter.…”

Section: Extreme Soil Temperaturesmentioning

confidence: 99%

The Complex Issue of Urban Trees—Stress Factor Accumulation and Ecological Service Possibilities

Czaja

Kołton

Muras

2020

Forests

View full text Add to dashboard Cite

This review paper is the first that summarizes many aspects of the ecological role of trees in urban landscapes while considering their growth conditions. Research Highlights are: (i) Plant growth conditions in cities are worsening due to high urbanization rates and new stress factors; (ii) Urban trees are capable of alleviating the stress factors they are exposed to; (iii) The size and vitality of trees is related to the ecological services they can provide. Our review shows, in a clear way, that the phenomenon of human-related environmental degradation, which generates urban tree stress, can be effectively alleviated by the presence of trees. The first section reviews concerns related to urban environment degradation and its influence on trees. Intense urbanization affects the environment of plants, raising the mortality rate of urban trees. The second part deals with the dieback of city trees, its causes and scale. The average life expectancy of urban trees is relatively low and depends on factors such as the specific location, proper care and community involvement, among others. The third part concerns the ecological and economic advantages of trees in the city structure. Trees affect citizen safety and health, but also improve the soil and air environment. Finally, we present the drawbacks of tree planting and discuss if they are caused by the tree itself or rather by improper tree management. We collect the latest reports on the complicated state of urban trees, presenting new insights on the complex issue of trees situated in cities, struggling with stress factors. These stressors have evolved over the decades and emphasize the importance of tree presence in the city structure.

show abstract

Section: Extreme Soil Temperaturesmentioning

confidence: 99%

The Complex Issue of Urban Trees—Stress Factor Accumulation and Ecological Service Possibilities

Czaja

Kołton

Muras

2020

Forests

View full text Add to dashboard Cite

show abstract

“…The genotypes used in this research, Oryza sativa (Ehrhartoideae subfamily), Homolepis isocalycia (Panicoideae subfamily) and Andropogon gayanus (Panicoideae subfamily) are species with C3, C3 proto-Kranz and C4 photosynthetic types, respectively. Short-term water shortage is one of the most powerful environmental drivers inducing phenotypic plasticity for many terrestrial plant species (Nicotra and Davidson 2009) and can differently influence C3 and C4 responses, mainly when strengthened to increases in air (Sage and Kubien 2007) and soil (Nóia Júnior et al 2018) temperatures. Water scarcity affects plants at different levels of its metabolism, anatomy and morphology and can greatly impact in carbon uptake and consequently in growth and production.…”

Section: Introductionmentioning

confidence: 99%

Phenotypic plasticity of leaf anatomical traits helps to explain gas-exchange response to water shortage in grasses of different photosynthetic types

Arantes

Filho

Pennacchi

et al. 2020

Theor. Exp. Plant Physiol.

View full text Add to dashboard Cite

C3 and C4 plants, as their intermediates, respond differently to short-term changes in environmental conditions. This difference is linked to contrasting levels of phenotypic plasticity and photosynthetic apparatus specialization. Phenotypic plasticity is an underexplored topic although its understanding is crucial to predict plant behaviour in future climatic scenarios. In this research, the phenotypic plasticity of anatomical traits and its influence to carbon uptake efficiency was studied in plants with different photosynthetic types, under contrasting water regimes. Oryza sativa cvs. Soberana (droughtsensitive) and Douradão (drought-tolerant) (C3), Homolepis isocalycia (C3 proto-Kranz) and Andropogon gayanus (C4), grown at three water treatments (100, 75 and 50% of substrate water holding capacity), were phenotyped for leaf anatomy and gas-exchange parameters. The results showed that plasticity trends indicated different strategies between O. sativa cultivars to deal with water shortage, explaining their classification as drought-sensitive or tolerant. We also mapped typical characteristics of C3-C4 intermediate plant, H. isocalycia, mainly in the ratio mesophyll:bundle sheath cells and hypothesize how it may influence photosynthesis. Finally, we have confirmed previous claims that C4 carbon uptake advantages may be limited under severe drought conditions, as A. gayanus have drastically reduced its photosynthetic rates at lower water levels. By studying C3-C4 intermediates, this study may also be a starting point to unravel the trade-offs of anatomical changes during the evolutionary process from C3 to C4 photosynthesis, and also improve the understanding of their impact in carbon uptake in different water conditions.

show abstract

“…The water deficit negatively affected the A, gs, and E of both genotypes, regardless of the microclimate. The reduction in the gs is the main control mechanism in rubber tree plants under water deficit conditions (Nóia Júnior et al 2018;Sterling et al 2019). The stomatal limitation can be considered a strategy of the plant to prevent an increase in transpiration (Sevanto et al 2014) and to prevent embolism and cavitation in the xylem (Chen et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Atmospheric evaporative demand and water deficit on the ecophysiology of Rubber seedlings

et al. 2022

View full text Add to dashboard Cite

The search for genetic materials resistant to adverse weather conditions has been a major focus in studies on species of economic interest. The objective of the present study was to assess the growth and photosynthesis of rubber seedlings clones under two conditions of atmospheric evaporative demand, characterized by fluctuations in temperature (TEMP) and vapor pressure deficit (VPD), associated to two water regimens. Hevea brasiliensis Muell. Arg (RRIM 600 and FX 3864) clones were assessed in two microclimates, at low (TEMP 21.2 ºC and VPD 0.29 Kpa) and high (TEMP 26.9 ºC and VPD 1.49 Kpa) atmospheric evaporative demand, under two water regimens: water deficit and well-watered. Water deficit 50% water availability was sufficient to reduce the net CO2 assimilation rate, leaf area and total chlorophyll of the clones studied that impacted growth in both microclimates. The effects of water deficit on growth and net carbon assimilation rate were intensified under high atmospheric evaporative demand. However, when comparing the two clones studied, RRIM 600 showed greater growth and photosynthesis without water restriction. The FX 3864 clone, despite the high CO2 assimilation values under high atmospheric demand and without water restriction, showed a reduced growth. The results of this study form an important basis for the selection of genotypes with the potential to develop in adverse climatic conditions. In this sense, the RRIM 600 genotype is recommended as a promising material that would best adapt under adverse climatic conditions.

show abstract

Ecophysiology of C3 and C4 plants in terms of responses to extreme soil temperatures

Cited by 20 publications

References 40 publications

The Complex Issue of Urban Trees—Stress Factor Accumulation and Ecological Service Possibilities

The Complex Issue of Urban Trees—Stress Factor Accumulation and Ecological Service Possibilities

Phenotypic plasticity of leaf anatomical traits helps to explain gas-exchange response to water shortage in grasses of different photosynthetic types

Atmospheric evaporative demand and water deficit on the ecophysiology of Rubber seedlings

Contact Info

Product

Resources

About