Physiological Responses to Stress

Madani, Babak; Mirshekari, Amin; Imahori, Yoshihiro

doi:10.1016/b978-0-12-813278-4.00020-8

Cited by 25 publications

(21 citation statements)

References 11 publications

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“…The resistance activities are activated as soon as the plant receives a signal about coming in contact with a potential vector. Plant defence includes morphological and structural changes at the cell wall, with a massive and directed reorganisation within the host cells; changes in gene expression and general metabolism [15,16].…”

Section: What Does Spectral Imaging Detect In Diseased Plants?mentioning

confidence: 99%

Close Range Spectral Imaging for Disease Detection in Plants Using Autonomous Platforms: a Review on Recent Studies

2020

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Purpose of Review A short introduction to the spectral imaging (SI) of plants along with a comprehensive overview of the recent research works related to disease detection in plants using autonomous phenotyping platforms is provided. Key benefits and challenges of SI for plant disease detection on robotic platforms are highlighted. Recent Findings SI is becoming a potential tool for autonomous platforms for non-destructive plant assessment. This is because it can provide information on the plant pigments such as chlorophylls, anthocyanins and carotenoids and supports quantification of biochemical parameters such as sugars, proteins, different nutrients, water and fat content. A plant suffering from diseases will exhibit different physicochemical parameters compared with a healthy plant, allowing the SI to capture those differences as a function of reflected or absorbed light. Summary Potential of SI to non-destructively capture physicochemical parameters in plants makes it a key technique to support disease detection on autonomous platforms. SI can be broadly used for crop disease detection by quantification of physicochemical changes in the plants.

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Section: What Does Spectral Imaging Detect In Diseased Plants?mentioning

confidence: 99%

Close Range Spectral Imaging for Disease Detection in Plants Using Autonomous Platforms: a Review on Recent Studies

2020

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“…New advances in the post-harvest senescence mechanism of horticultural products Fresh horticultural products are living tissues that experience continuous changes after harvest. Their commodities are perishable products, with active metabolism during the post-harvest period [2], which induces post-harvest losses. These post-harvest losses, especially in terms of quality and nutritional composition, could be better controlled with an improved knowledge of their postharvest physiology [7].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Reactive oxygen species are known to play toxic roles in lipid peroxidation, membrane damage, and protein and DNA oxidization processes, resulting in cell death [14,15]. High levels of ROS can lead to phytotoxicity, whereas relatively low concentrations can be used for acclamatory signaling [2]. The roles of ROS as both toxic byproducts and as signaling molecules have been reported in fruit development and ripening [14].…”

Section: Reactive Oxygen Species Metabolism and Senescencementioning

confidence: 99%

“…While ROS have the potential to cause oxidative damage to cells during environmental stress, they also play a key role in plants as signal transduction molecules involved in mediating responses to pathogen infection, environmental stresses, programmed cell death (accelerated by adenosine triphosphate depletion and altered redox states in cells [17]), and various developmental stimuli. These diverse stresses activate similar cell signaling pathways and cellular responses [2].…”

Section: Reactive Oxygen Species Metabolism and Senescencementioning

confidence: 99%

“…As perishable commodities, fresh horticultural crops are prone to post-harvest economic losses of quality and quantity due to biotic and abiotic stresses [1]. These stresses lead to a series of morphological, physiological, biochemical, and molecular changes in horticultural products [2]. To address these changes, plants have evolved both passive and active mechanisms to prevent infection.…”

Section: Introductionmentioning

confidence: 99%

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ROS and MAPK Cascades in the Post-harvest Senescence of Horticultural Products

Gouda¹,

Zhang²,

Wang³

et al. 2020

J Proteomics Bioinform

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Plants are naturally sessile and cannot move away from adverse environmental conditions. Environmental stress may induce loss of membrane integrity, which is a seminal feature of premature senescence. Therefore, plants must respond in other ways to protect themselves from abiotic and biotic stresses that involve protein kinases, which are crucial to signal transduction pathways. Protein kinases are involved in the phosphorylation of serine/threonine and tyrosine side chains of proteins. Among these protein kinases, mitogen-activated protein kinase (MAPK) cascade genes are key components of signal transduction pathways that help transduce extracellular signals to intracellular responses in animals, plants, and fungi. Interestingly, reactive oxygen species (ROS) are important and common messengers that are produced in various biotic and abiotic stresses; ROS are known to activate many of the MAPKs. In this review, we highlight the mechanisms of crosstalk between ROS and MAPK cascades in the post-harvest senescence of horticultural products and summarize recent findings about MAPK regulation and functioning in various cellular processes. Figure 1: Response of MAPK cascades activated by ROS in biotic and abiotic stresses. MEKK1 is a common MAPKKK activated by ROS that are produced in response to both biotic and abiotic stresses. MEKK1 activates distinct downstream components of the MAPK cascade in Arabidopsis. Purple and green colors represent biotic and abiotic stresses, respectively. Gouda MHB, et al. OPEN ACCESS Freely available online J Proteomics Bioinform, Volume 13(1) 2-7 aerobic metabolism, but they are now regarded as central players in the complex signaling network of cells [5]. Gouda MHB, et al.

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