Effect of heat stress on the photosynthetic apparatus in maize (Zea mays L.) grown at control or high temperature

Sinsawat, Veerana; Leipner, Jörg; Stamp, P.; Fracheboud, Yvan

doi:10.1016/j.envexpbot.2004.01.010

Cited by 189 publications

(122 citation statements)

References 20 publications

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“…A lot of information on agronomic and physiological traits for high temperature tolerance in maize is available (Steven et al, 2002;Sinsawat et al, 2004). The final plant height reflects the growth behavior of a crop, besides genetic characteristics, availability of essential nutrients, space, water and environmental condition under which it is grown.…”

Section: Resultsmentioning

confidence: 99%

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Evaluation of Maize Hybrids for Tolerance to High Temperature Stress in Central Punjab

Rahman¹,

Arif²,

Hussain³

et al. 2013

AJBEBT

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Each genotype has an optimum range of temperature for growth and development, when the temperature increases beyond this critical limit, it generates temperature stress which affects its performance adversely. The aim of the study was evaluate the variation exists among genotypes regarding heat stress, 25 maize hybrids were tested at Maize and Millets Research Institute, Yusafwala-Sahiwal, Pakistan. The studies were focused on screening for heat tolerant maize hybrids that are adaptable in agro-climatic conditions of Pakistan. Results indicate that the all the maize hybrids were significantly affected by high temperature stress. Maize hybrids YH-1898, KJ. Surabhi, FH-793 ND-6339 and NK -64017 showed reasonable tolerance against high temperature and they produced higher grain yield per unit area as compared to other maize hybrids.

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Section: Resultsmentioning

confidence: 99%

“…Similarly, it can desiccate exposed silk and pollen grains on their release from the anthers due to thin outer membranes (Sinsawat, 2004). Extended exposure to temperature beyond 32.5 0 C reduced pollen germination of many genotypes of maize to a zero level.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Maize Hybrids for Tolerance to High Temperature Stress in Central Punjab

Rahman¹,

Arif²,

Hussain³

et al. 2013

AJBEBT

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“…Although heat stress caused a reduction in photosynthetic rate in two wucai, the tolerant WS-1 could still maintain higher photosynthetic rate than the sensitive genotype WS-6. The inhibited photosynthesis may be as a main result of reduced carbon fixation and assimilation [35] and nitrogen absorption. Photosynthetic rate per unit leaf nitrogen of dry weight, considered as photosynthetic nitrogen-use efficiency, namely PNUE, is used to represent the nitrogen use efficiency in leaves [18].…”

Section: Discussionmentioning

confidence: 99%

Influence of heat stress on leaf morphology and nitrogen–carbohydrate metabolisms in two wucai (Brassica campestris L.) genotypes

et al. 2017

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Heat stress is a major environmental stress that limits plant growth and yield worldwide. The present study was carried out to explore the physiological mechanism of heat tolerant to provide the theoretical basis for heat-tolerant breeding. The changes of leaf morphology, anatomy, nitrogen assimilation, and carbohydrate metabolism in two wucai genotypes (WS-1, heat tolerant; WS-6, heat sensitive) grown under heat stress (40°C/30°C) for 7 days were investigated. Our results showed that heat stress hampered the plant growth and biomass accumulation in certain extent in WS-1 and WS-6. However, the inhibition extent of WS-1 was significantly smaller than WS-6. Thickness of leaf lamina, upper epidermis, and palisade mesophyll were increased by heat in WS-1, which might be contributed to the higher assimilation of photosynthates. During nitrogen assimilation, WS-1 possessed the higher nitrogenrelated metabolic enzyme activities, including nitrate reductase (NR), glutamine synthetase (GS), glutamate synthase (GOGAT), and glutamate dehydrogenase (GDH), which were reflected by higher photosynthetic nitrogen-use efficiency (PNUE) with respect to WS-6. The total amino acids level had no influence in WS-1, whereas it was reduced in WS-6 by heat. And the proline contents of both wucai genotypes were all increased to respond the heat stress. Additionally, among all treatments, the total soluble sugar content of WS-1 by heat got the highest level, including higher contents of sucrose, fructose, and starch than those of WS-6. Moreover, the metabolism efficiency of sucrose to starch in WS-1 was greater than WS-6 under heat stress, proved by higher activities of sucrose phosphate synthase (SPS), sucrose synthase (SuSy), acid invertase (AI), and amylase. These results demonstrated that leaf anatomical alterations resulted in higher nitrogen and carbon assimilation in heat-tolerant genotype WS-1, which exhibited a greater performance to resist heat stress.

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“…Maize, like a number of other crop plants, also shows great changes in CO 2 fi xation under suboptimal growth conditions (TOLLENAAR 1989, SINSAWAT et al 2004. In this study, the leaf gas exchange data revealed that the growing season and GH conditions had a great infl uence on these attributes of both the cultivars.…”

Section: Discussionmentioning

confidence: 78%

Seasonal Differences in Growth, Photosynthetic Pigments and Gas Exchange Properties in Two Greenhouse Grown Maize (Zea Mays L.) Cultivars

Hussain

Wahid

Rasheed

et al. 2014

Acta Botanica Croatica

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-The greenhouse (GH) effect has emerged as a major factor in changing cropping patterns and limiting crop yields. This study was conducted to determine the comparative growth and photosynthetic responses of selected heat-resistant (cv. Sadaf) and heat-susceptible (cv. Agatti-2002) cultivars of maize to simulated GH conditions during spring and autumn seasons at seedling, silking and grain fi lling stages in 2007. Fifteen day old plants were shifted to plexiglass-fi tted canopies to create GH conditions and data were recorded at each growth stage. The results revealed that the seasons, GH conditions and cultivars had large effects on plant growth and photosynthetic attributes. Simulated GH conditions increased the canopy temperature 4-7 °C in spring and 3-5 °C in autumn, but increased relative humidity by 2-3% in spring and 5-9% in autumn season. Although GH reduced the growth of both cultivars, shoot dry mass was reduced more in spring grown heat-susceptible maize at all growth stages. Although the cultivars showed a decrease in growth and photosynthesis, GH conditions resulted in less damage to cv. Sadaf than cv. Agatti-2002 in both seasons. Major indicators of sensitivity to GH effect were loss of chlorophyll b and carotenoids, reductions in net photosynthesis and stomatal conductance, and possibly reduced ability of Rubisco to fi x CO 2 in sensitive maize.

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Effect of heat stress on the photosynthetic apparatus in maize (Zea mays L.) grown at control or high temperature

Cited by 189 publications

References 20 publications

Evaluation of Maize Hybrids for Tolerance to High Temperature Stress in Central Punjab

Evaluation of Maize Hybrids for Tolerance to High Temperature Stress in Central Punjab

Influence of heat stress on leaf morphology and nitrogen–carbohydrate metabolisms in two wucai (Brassica campestris L.) genotypes

Seasonal Differences in Growth, Photosynthetic Pigments and Gas Exchange Properties in Two Greenhouse Grown Maize (Zea Mays L.) Cultivars

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