Abiotic Stress Tolerance in Plants: An Industry Perspective

Sivasankar, S.; Williams, Robert W.; Greene, Thomas W.

doi:10.1002/9783527632930.ch2

Cited by 6 publications

(4 citation statements)

References 69 publications

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“…For example, the FtsH11 protease of Arabidopsis has been found to contribute to overall tolerance to high temperatures by alleviating light stress through the degradation of unassembled thylakoid membrane proteins (Chen et al, 2006). HOT5, which encodes an alcohol dehydrogenase functioning as nitrosoglutathione reductase, is also required for survival under heat, revealing a possible role of nitric oxide (NO) in thermotolerance and plant development (Sivasankar et al, 2012). …”

Section: Physiological and Molecular Indicators Of Tolerance To Incrementioning

confidence: 99%

“…The emerging phenomics methodologies are used to identify genes associated with traits of interest by establishing functional relationships between genetics and the associated phenotype. Such tools are also used to characterize plant performance under controlled environments or in the field (Sivasankar et al, 2012). The temperature and duration of heat stress treatments resulting in changes in growth and development vary between plant tissues and growth stages so choosing an appropriate phenotype is critical as the function of a heat stress response gene may contribute to thermotolerance differentially across tissues and growth stages.…”

Section: Strategies To Crop Improvement For Heat Stress Tolerancementioning

confidence: 99%

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Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops

Bita¹,

Geräts²

2013

Front. Plant Sci.

1,353

924

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Global warming is predicted to have a general negative effect on plant growth due to the damaging effect of high temperatures on plant development. The increasing threat of climatological extremes including very high temperatures might lead to catastrophic loss of crop productivity and result in wide spread famine. In this review, we assess the impact of global climate change on the agricultural crop production. There is a differential effect of climate change both in terms of geographic location and the crops that will likely show the most extreme reductions in yield as a result of expected extreme fluctuations in temperature and global warming in general. High temperature stress has a wide range of effects on plants in terms of physiology, biochemistry and gene regulation pathways. However, strategies exist to crop improvement for heat stress tolerance. In this review, we present recent advances of research on all these levels of investigation and focus on potential leads that may help to understand more fully the mechanisms that make plants tolerant or susceptible to heat stress. Finally, we review possible procedures and methods which could lead to the generation of new varieties with sustainable yield production, in a world likely to be challenged both by increasing population, higher average temperatures and larger temperature fluctuations.

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Section: Physiological and Molecular Indicators Of Tolerance To Incrementioning

confidence: 99%

Section: Strategies To Crop Improvement For Heat Stress Tolerancementioning

confidence: 99%

Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops

Bita¹,

Geräts²

2013

Front. Plant Sci.

1,353

924

View full text Add to dashboard Cite

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“…Although maize breeders have been successful in developing drought-tolerant hybrids (Cooper et al, 2014;Hu and Xiong, 2014), it is likely that both conventional and biotechnological approaches will be required to maintain and surpass current genetic gains (Edmeades, 2013). Improving drought tolerance through transgenic means has been a strong focus of both public and private sectors (Deikman et al, 2012;Sivasankar et al, 2012;Waltz, 2014). Here, we describe the identification of two novel members of the maize really interesting new genes (RING) gene family, called ZmXerico1 and ZmXerico2, which when overexpressed in both Arabidopsis (Arabidopsis thaliana) and maize can improve drought tolerance.…”

mentioning

confidence: 99%

Overexpression of RING Domain E3 Ligase ZmXerico1 Confers Drought Tolerance through Regulation of ABA Homeostasis

Brugière

Zhang

et al. 2017

Plant Physiol.

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Drought stress is one of the main environmental problems encountered by crop growers. Reduction in arable land area and reduced water availability make it paramount to identify and develop strategies to allow crops to be more resilient in waterlimiting environments. The plant hormone abscisic acid (ABA) plays an important role in the plants' response to drought stress through its control of stomatal aperture and water transpiration, and transgenic modulation of ABA levels therefore represents an attractive avenue to improve the drought tolerance of crops. Several steps in the ABA-signaling pathway are controlled by ubiquitination involving really interesting new genes (RING) domain-containing proteins. We characterized the maize (Zea mays) RING protein family and identified two novel RING-H2 genes called ZmXerico1 and ZmXerico2. Expression of ZmXerico genes is induced by drought stress, and we show that overexpression of ZmXerico1 and ZmXerico2 in Arabidopsis and maize confers ABA hypersensitivity and improved water use efficiency, which can lead to enhanced maize yield performance in a controlled drought-stress environment. Overexpression of ZmXerico1 and ZmXerico2 in maize results in increased ABA levels and decreased levels of ABA degradation products diphaseic acid and phaseic acid. We show that ZmXerico1 is localized in the endoplasmic reticulum, where ABA 89-hydroxylases have been shown to be localized, and that it functions as an E3 ubiquitin ligase. We demonstrate that ZmXerico1 plays a role in the control of ABA homeostasis through regulation of ABA 89-hydroxylase protein stability, representing a novel control point in the regulation of the ABA pathway.

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“…Recently, EIN3 was found to directly bind to the promoter of microRNA164 ( miR164 ) to suppress its expression, resulting in an enhancement in the transcript level of ORE1 / NAC2 and consequently promoting leaf senescence (Li, Peng, Wen, & Guo, 2013). Although ZmEIN3 has been implicated in the ethylene signalling (Sivasankar & Reimann, 2009), the molecular regulation of ethylene‐mediated leaf senescence remains elusive in maize.…”

Section: Introductionmentioning

confidence: 99%

The transcription factor ZmNAC126 accelerates leaf senescence downstream of the ethylene signalling pathway in maize

Yang

Wang

Qiu

et al. 2020

Plant Cell & Environment

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Leaf senescence is an integral part of plant development, during which, nutrients are remobilized from senescent leaves to fast-growing organs. The initiation and progression dynamics of leaf senescence is therefore vital not only to the maximal accumulation of assimilates but also to the efficient remobilization of nutrients. Senescence is a finely tuned process that involves the action of a large number of transcription factors (TFs). The NAC TFs play critical roles in regulating leaf senescence in Arabidopsis, wheat, rice and tomato. Here, we identified a NAC TF, ZmNAC126 that is responsive to leaf senescence in maize. Ectopic overexpression of ZmNAC126 in Arabidopsis and maize enhanced chlorophyll degradation and promoted leaf senescence. Electrophoretic mobility shift and chromatin immunoprecipitation assays revealed that ZmNAC126 could directly bind to the promoters of major chlorophyll catabolic genes in maize. Dual-luciferase assay in maize protoplasts indicated that ZmNAC126 positively regulates these chlorophyll catabolic genes in maize. Moreover, ZmNAC126 could be induced by ethylene, and ZmEIN3, a major TF of ethylene signalling, could bind to its promoter to transactivate its expression. Taken together, ZmNAC126 may play a pivotal role in regulating natural and ethylene-triggered leaf senescence in maize.

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Abiotic Stress Tolerance in Plants: An Industry Perspective

Cited by 6 publications

References 69 publications

Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops

Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops

Overexpression of RING Domain E3 Ligase ZmXerico1 Confers Drought Tolerance through Regulation of ABA Homeostasis

The transcription factor ZmNAC126 accelerates leaf senescence downstream of the ethylene signalling pathway in maize

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