Phytohormone and Light Regulation of Chlorophyll Degradation

Zhu, Xiaoyu; Chen, Junyi; Qiu, Kai; Kuai, Benke

doi:10.3389/fpls.2017.01911

Cited by 66 publications

(41 citation statements)

References 92 publications

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“…Water deficits are known to induce genes associated with chlorophyll degradation and metabolite recycling (Zhu et al 2017), and these processes eventually lead to cell death. Thus it was not surprising we found large transcript decreases for genes associated with chlorophyll reduction, such as decreased transcript levels for several highly expressed light-harvesting chlorophyll a/b-binding (LHCB) proteins like Cc04_g16410 (FC = −5.52) and a gene encoding a putative magnesium-chelatase subunit H protein (Cc06_g17100, FC = −4.15).…”

Section: Discussionmentioning

confidence: 99%

Temperature Impacts the Response of Coffea canephora to Decreasing Soil Water Availability

Thioune

Strickler

Gallagher

et al. 2020

Tropical Plant Biol.

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Climate change is expected to result in more frequent periods of both low rainfall and above normal temperatures for many coffee growing regions. To understand how coffee reacts to such change, we studied the physiological and gene expression responses of the clonal variety C. canephora FRT07 exposed to water deficits under two different temperature regimes. Variations in the timedependent impact of water deficits on leaf stomatal conductance and carbon assimilation were significantly different under the 27°C and 27°C/42°C conditions examined. The physiological responses 24 h after re-watering were also different for both conditions. Expression analysis of genes known to respond to water deficits indicated that drought-related signaling occurred at both temperatures. Deeper insights into the response of coffee to water deficits was obtained by RNASeq based whole transcriptome profiling of leaves from early, late, and recovery stages of the 27°C experiment. This yielded expression data for 13,642 genes and related differential expression analysis uncovered 362 and 474 genes with increased and decreased expression, respectively, under mild water deficits, and 1627 genes and 2197 genes, respectively, under more severe water deficits. The data presented, from a single clonal coffee variety, serves as an important reference point for future comparative physiological/ transcriptomic studies with clonal coffee varieties with different sensitivities to water deficits and high temperatures. Such comparative analyses will help predict how different coffee varieties respond to changing climatic conditions, and may facilitate the identification of alleles associated with high and low tolerance to water deficits, enabling faster breeding of more climatesmart coffee trees.

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Section: Discussionmentioning

confidence: 99%

Temperature Impacts the Response of Coffea canephora to Decreasing Soil Water Availability

Thioune

Strickler

Gallagher

et al. 2020

Tropical Plant Biol.

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“…During the fruit ripening, the fruit peel color of some varieties turns from green to yellow, a process called degreening. This is virtually a process of chlorophyll degradation mediated by Chl catabolic genes (CCGs) [41]. Hongyu is a typical variety whose fruits experience degreening process and exhibit yellow-peel, while Guire82 is a Chinese cultivar derived from yellow-peel Neelum and represents atypical stay-green peel (Fig.…”

Section: Mango Fruit Peel Pigmentationmentioning

confidence: 99%

“…Genes involved in the photosynthesis and sugar metabolism are retrieved based on the information provided in Plant Metabolic Network [105] (https://www.plantcyc.org). Polyphenol metabolism and chlorophyll metabolism genes were retrieved based on references [41,106]. Carotenoid biosynthesis genes were retrieved from AtIPD [107].…”

Section: Manual Revision For Certain Genes and Gene Familiesmentioning

confidence: 99%

The genome evolution and domestication of tropical fruit mango

et al. 2020

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Background: Mango is one of the world's most important tropical fruits. It belongs to the family Anacardiaceae, which includes several other economically important species, notably cashew, sumac and pistachio from other genera. Many species in this family produce family-specific urushiols and related phenols, which can induce contact dermatitis. Results: We generate a chromosome-scale genome assembly of mango, providing a reference genome for the Anacardiaceae family. Our results indicate the occurrence of a recent whole-genome duplication (WGD) event in mango. Duplicated genes preferentially retained include photosynthetic, photorespiration, and lipid metabolic genes that may have provided adaptive advantages to sharp historical decreases in atmospheric carbon dioxide and global temperatures. A notable example of an extended gene family is the chalcone synthase (CHS) family of genes, and particular genes in this family show universally higher expression in peels than in flesh, likely for the biosynthesis of urushiols and related phenols. Genome resequencing reveals two distinct groups of mango varieties, with commercial varieties clustered with India germplasms and demonstrating allelic admixture, and indigenous varieties from Southeast Asia in the second group. Landraces indigenous in China formed distinct clades, and some showed admixture in genomes. Conclusions: Analysis of chromosome-scale mango genome sequences reveals photosynthesis and lipid metabolism are preferentially retained after a recent WGD event, and expansion of CHS genes is likely associated with urushiol biosynthesis in mango. Genome resequencing clarifies two groups of mango varieties, discovers allelic admixture in commercial varieties, and shows distinct genetic background of landraces.

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“…Rosemary and lemongrass extracts at the concentration of 20% acted negatively, since there was a chlorophyll a reduction. Some studies have shown that the methyl jasmonate molecule acts in the process of plant senescence, promoting chlorophyll degradation Zhu et al (2017). In this way, the methyl jasmonate present in rosemary leaves may have contributed to the reduction of chlorophyll a when compared to the control.…”

Section: Resultsmentioning

confidence: 99%

Effect of rosemary, garlic, pepper and lemongrass extracts in postharvest of organic Brassica oleracea L. leaves

Melo¹,

Duarte²,

Ferrareze³

et al. 2018

Commun. Plant Sci.

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The growing concern about food safety makes necessary to search for alternative methods of food conservation. The objective of this work was to evaluate postharvest conservation of kale leaf using aqueous vegetal extracts. The experimental design was completely randomized, with the concentrations of 5, 10, 15, 20 and 25% of Rosmarinus officinalis, Allium sativum, Capsicum baccatum, Cymbopogon citratus and the control treatment using deionized water. The extracts were sprayed on kale leaves with manual spray over the entire adaxial and abaxial epidermis. The evaluated parameters were chlorophyll a and b, weight loss, total phenolics compounds, antioxidant activity and a visual analysis. The leaves remained at ambient temperature for six days. The results indicate that there was no significant conservation in the content of chlorophyll a, b and visual analysis when compared to the control, and the extracts did not have influence in the weight loss. There was an increase of total phenolic content and antioxidant activity with rosemary, lemongrass and pepper extracts, the garlic extract reduced the concentration of these bioactive compounds when compared to the control. In general, the application of the vegetal extracts did not influence in the postharvest conservation of kale leaves.

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Phytohormone and Light Regulation of Chlorophyll Degradation

Cited by 66 publications

References 92 publications

Temperature Impacts the Response of Coffea canephora to Decreasing Soil Water Availability

Temperature Impacts the Response of Coffea canephora to Decreasing Soil Water Availability

The genome evolution and domestication of tropical fruit mango

Effect of rosemary, garlic, pepper and lemongrass extracts in postharvest of organic Brassica oleracea L. leaves

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