Reduction of photosynthesis in sun leaves of Gossypium hirsutum L under conditions of high light intensities and suboptimal leaf temperatures

Königer, Martina; Winter, Klaus

doi:10.1051/agro:19930710

Cited by 25 publications

(9 citation statements)

References 24 publications

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“…Higher stomatal conductance combined with smaller leaf area decreases boundary layer resistance and increases energy dissipation (Nobel 1991), which further reduces leaf temperature. Several studies have shown substantial cooling of upland cotton (Gossypium hirsutum L.) foliage as an adaptation to high temperatures Nijs et al 1997), through higher stomatal conductance (Jarvis & Mansfield 1981;Koniger & Winter 1993;Mahan et al 1995). Stomatal conductance in Pima cotton (Gossypium barbadense L.) is genetically determined (Pettigrew et al 1993;Pettigrew & Meredith 1994;Lu et al 1996Lu et al , 1997 with quantitative genes involved in its expression (Percy et al 1996), and has been shown to be associated with heat resistance and higher yields .…”

Section: Introductionmentioning

confidence: 99%

Genetic analysis of stomatal conductance in upland cotton (Gossypium hirsutum L.) under contrasting temperature regimes

Rahman

2005

J. Agric. Sci.

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Stomatal conductance plays an important role in the heat avoidance mechanism of crop plants. Stomatal conductance in cotton is genetically determined and has been shown to be associated with heat resistance and higher yields. Experiments were carried out with six generations (parental, F1, F2 and back crosses) of three upland cotton crosses under heat-stressed and non-stressed greenhouse and field regimes, to understand the inheritance pattern of stomatal conductance as affected by contrasting temperature regimes. The results revealed significant variation for stomatal conductance due to generations and generation×temperature regime interaction in the three crosses. In general, heat stress reduced stomatal conductance and available genetic variability. Temperature regimes exerted a significant effect on the expression of the genes responsible for stomatal conductance. High temperature or heat stress favoured the expression of genes having additive effects, while absence of heat stress favoured those having dominant effects in two of the three crosses evaluated. The third cross showed the opposite reaction. The results suggest that genes controlling stomatal conductance in the parents of the first two crosses (MNH-552, HR109-RT, CIM-448, CRIS-19) were different from those controlling stomatal conductance in FH-900 and N-Karishma, the parents of the third cross. The selection efficiency of stomatal conductance in segregating populations was likely to be affected by the complexity of its inheritance, environmental dependency, and presence of substantial non-allelic and genotype×temperature regime interactions.

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Section: Introductionmentioning

confidence: 99%

Genetic analysis of stomatal conductance in upland cotton (Gossypium hirsutum L.) under contrasting temperature regimes

Rahman

2005

J. Agric. Sci.

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Section: Introductionmentioning

confidence: 99%

“…Furthermore, suboptimal temperatures can negatively affect the photosynthetic apparatus of cotton leaves, which is likely a major contributor to growth reductions. Königer and Winter (1993) reported a 60% reduction in photosynthesis in leaves exposed to high light and 25°C (only 5°C below the optimum temperature for cotton plants). Snider et al (2018) documented significant reductions in performance (as much as 51%) and photosynthetic efficiency for multiple component processes of the thylakoid reactions under growth-limiting low temperature (20/15°C day/ night) during the first two weeks after planting, relative to optimal temperature conditions (30/20°C).…”

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confidence: 99%

Root system growth and anatomy of cotton seedlings under suboptimal temperature

Snider

Thangthong

Rossi

et al. 2022

J Agronomy Crop Science

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Root morphology and anatomy are important plant traits that could potentially influence seedling vigour, resource acquisition and susceptibility to early‐season stress. Therefore, the objective of the current experiment was to evaluate the effects of cultivar and growth temperature on seedling root growth and anatomical characteristics in cotton. To address this objective, experiments were conducted with six modern cotton cultivars, expected to have differences in seedling vigour, grown under optimal (30/20°C) and suboptimal (20/15°C) day/night temperature regimes. Root morphology and taproot cross‐sectional anatomy were evaluated two weeks after planting. Cultivars with the most vigorously growing root systems produced 73% more secondary roots, 68% more total root length, 74% more surface area and 72% higher total root volume than the least vigorous cultivars. The cultivar with the greatest production of secondary roots also exhibited a somewhat uncommon hexarch arrangement of vascular bundles in taproot cross sections. Thus, we suggest that this difference in root anatomy may be a determinant of genotypic differences in lateral root development. In response to low temperature, taproot length, total root length, secondary root formation, root surface area and root volume declined substantially relative to optimal temperature conditions (35%–75% declines). This reinforces the need to ensure optimal temperature conditions at planting or to identify cultivars with improved performance under suboptimal early‐season conditions. Conversely, root diameter responded positively to low growth temperatures, and cold‐induced increases in root thickness were associated with increases in the number and cross‐sectional area of root cells.

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“…For example, a study by Pettigrew (), with eight different cotton genotypes differing in leaf shape, reported higher photosynthetic rates in okra‐leaf genotypes due to higher chlorophyll content (13%) and smaller leaf area (37%) compared to normal‐leaf type genotypes. Net photosynthetic rate decreases with declines in temperature below the optimum (Hendrickson, Chow, & Furbank, ; Labate & Leegood, ), where 40% declines have been observed for cotton leaves at 20°C, relative to optimal temperature conditions (Königer & Winter, ). Previous work by Holaday, Martindale, Aired, Brooks, and Leegood () and Holaday, Mahan, and Payton () has indicated that low temperature decreases net photosynthesis via decreased stomatal conductance and/or biochemical limitations, including Rubisco deactivation under low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Associations between first true leaf physiology and seedling vigor in cotton under different field conditions

2020

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Rapid development of the first true leaf has been suggested as a key driver of seedling vigor in cotton, yet studies demonstrating an association between first true leaf physiological processes and early season cotton growth are limited. It was hypothesized that both first true leaf area (FTLA) and photosynthetic rates would be positively associated with cotton (Gossypium hirsutum and G. barbadense) seedling vigor, and that photosynthetic component processes would differ in their contribution to net photosynthesis (An) of the first true leaf. To test these hypotheses, three different cotton cultivars were planted in the 2017 and 2018 seasons on three selected dates each year to generate broad differences in seedling vigor. Growth analysis was conducted to assess seedling vigor at 3 and 5 wk after planting, and a combination of dark‐ and light‐adapted gas exchange and fluorescence measurements were performed on the first true leaf, concurrent with growth assessments. Seedling vigor was much more strongly associated with FTLA than An on a per unit leaf area basis, suggesting that FTLA was a stronger indicator of seedling vigor. Correlation analysis between An and a number of component processes derived from combined gas exchange and fluorescence measurements indicated that An was strongly correlated with electron transport rates and stomatal conductance. However, we suggest that most of the variability we observed in An of the first true leaf was primarily driven by nonstomatal factors, since no significant correlations between An and chloroplast CO2 concentration or substomatal CO2 concentration was apparent.

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Reduction of photosynthesis in sun leaves of Gossypium hirsutum L under conditions of high light intensities and suboptimal leaf temperatures

Cited by 25 publications

References 24 publications

Genetic analysis of stomatal conductance in upland cotton (Gossypium hirsutum L.) under contrasting temperature regimes

Genetic analysis of stomatal conductance in upland cotton (Gossypium hirsutum L.) under contrasting temperature regimes

Root system growth and anatomy of cotton seedlings under suboptimal temperature

Associations between first true leaf physiology and seedling vigor in cotton under different field conditions

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