Plant Tolerance to Heat Stress: Current Strategies and New Emergent Insights

Leone, Antonietta; Perrotta, Carla; Maresca, Bruno

doi:10.1007/978-94-017-0255-3_1

Cited by 20 publications

(13 citation statements)

References 117 publications

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“…25 Some biochemical processes which are common to all plant stress responses are-the production of osmolytes, altering water movement and scavenging reactive oxygen species (ROS). [26][27][28] Even though there has been extensive research in plant stress responses, we still could not make out why so few species are able to colonize high stress habitats. On the other hand, plant stress research rarely takes into consideration a ubiquitous aspect of plant biology-fungal symbiosis.…”

Section: 214146mentioning

confidence: 99%

Unraveling the role of fungal symbionts in plant abiotic stress tolerance

Singh

Gill

Tuteja

2011

Plant Signaling & Behavior

389

170

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Fungal symbionts have been found associated with every plant studied in natural ecosystem, where they colonize and reside entirely in the internal tissues of their host plant or partially. Fungal endophytes can express/form a range of different lifestyle/relationships with different host including symbiotic, mutualistic, commensalistic and parasitic in response to host genotype and environmental factors. In mutualistic association fungal endophyte can enhance growth, increase reproductive success and confer biotic and abiotic stress tolerance to its host plant. Since abiotic stress such as, drought, high soil salinity, heat, cold, oxidative stress, heavy metal toxicity is the common adverse environmental conditions that affect and limit crop productivity worldwide. It may be a promising alternative strategy to exploit fungal endophytes to overcome the limitations to crop production brought by abiotic stress. There is increasing interest in developing the potential biotechnological applications of fungal endophytes for improving plant stress tolerance and sustainable production of food crops. Here we have described the fungal symbioses, fungal symbionts and their role in abiotic stress tolerance. A putative mechanism of stress tolerance by symbionts has also been covered.

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Section: 214146mentioning

confidence: 99%

Unraveling the role of fungal symbionts in plant abiotic stress tolerance

Singh

Gill

Tuteja

2011

Plant Signaling & Behavior

389

170

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“…All plants are thought capable of perceiving and responding to stress (Bohnert et al, 1995;Bartels and Sunkar, 2005). Plant responses common to these stresses include osmolyte production, altering water transport and scavenging reactive oxygen species (ROS) (Leone et al, 2003;Maggio et al, 2003;Tuberosa et al, 2003). Still, relatively few species are able to thrive in habitats that impose high levels of abiotic stress (Alpert, 2000).…”

Section: Introductionmentioning

confidence: 99%

Stress tolerance in plants via habitat-adapted symbiosis

et al. 2008

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We demonstrate that native grass species from coastal and geothermal habitats require symbiotic fungal endophytes for salt and heat tolerance, respectively. Symbiotically conferred stress tolerance is a habitat-specific phenomenon with geothermal endophytes conferring heat but not salt tolerance, and coastal endophytes conferring salt but not heat tolerance. The same fungal species isolated from plants in habitats devoid of salt or heat stress did not confer these stress tolerances. Moreover, fungal endophytes from agricultural crops conferred disease resistance and not salt or heat tolerance. We define habitat-specific, symbiotically-conferred stress tolerance as habitatadapted symbiosis and hypothesize that it is responsible for the establishment of plants in highstress habitats. The agricultural, coastal and geothermal plant endophytes also colonized tomato (a model eudicot) and conferred disease, salt and heat tolerance, respectively. In addition, the coastal plant endophyte colonized rice (a model monocot) and conferred salt tolerance. These endophytes have a broad host range encompassing both monocots and eudicots. Interestingly, the endophytes also conferred drought tolerance to plants regardless of the habitat of origin. Abiotic stress tolerance correlated either with a decrease in water consumption or reactive oxygen sensitivity/generation but not to increased osmolyte production. The ability of fungal endophytes to confer stress tolerance to plants may provide a novel strategy for mitigating the impacts of global climate change on agricultural and native plant communities.

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“…Elevated temperature can increase evapotranspiration rates, drought and heat stress [13,14], which in turn might be expected to increase mortality in forest biomes [12]. However, examination of the selected study sites suggests that forest biomes are more resistant than crops to elevated temperatures, probably because of differences in vegetation structure [25].…”

Section: Discussion and Concluding Remarksmentioning

confidence: 98%

“…On the other hand, climate warming directly impacts the dynamics of the terrestrial vegetation biomes by increasing the frequency, duration and severity of drought and heat stress [8][9][10][11], while other studies have suggested that climate warming tends to relax temperature constraints for plant growth [12,13]. Many studies assume that plants have an optimal threshold for growth and reproduction [14], suffering cold stress when temperatures are below this threshold, and heat stress when above [15]. Accordingly, we can deduce that when the in-situ temperature is suboptimal, climate warming may relax the temperature constraint for plant metabolism and promote its growth, while supraoptimal temperature conditions and the accompanying rise in the vapor pressure deficit and evaporation may damage the plant's cellular tissues [8,16,17].…”

Section: Introductionmentioning

confidence: 99%

Heat Response of Global Vegetation Biomes to Ongoing Climate Warming Based on Remote Sensing

Zhang

2017

Geosciences

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Abstract:Research is needed by global change scientists on how global vegetation biomes respond to ongoing climate warming. To address this issue, we selected study sites with significant climate warming for diverse vegetation biomes, and used global gridded temperature and remote sensing data over the past 32 years . The results suggested that climate warming in areas above approximately 60 • N is relaxing the heat-constraints on vegetation activity, thus promoting plant growth; whereas, in mid to low latitude areas, ongoing climate warming probably imposes negative impacts on vegetation biomes through drought and heat stress. Understanding these potential effects is important for planning adaptation strategies to mitigate the impacts of climate warming, particularly for agro-ecosystems.

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Plant Tolerance to Heat Stress: Current Strategies and New Emergent Insights

Cited by 20 publications

References 117 publications

Unraveling the role of fungal symbionts in plant abiotic stress tolerance

Unraveling the role of fungal symbionts in plant abiotic stress tolerance

Stress tolerance in plants via habitat-adapted symbiosis

Heat Response of Global Vegetation Biomes to Ongoing Climate Warming Based on Remote Sensing

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