In vivo role of<i>Arabidopsis</i>arginase in arginine metabolism and abiotic stress response

Hong, Shi; Chan, Zhulong

doi:10.4161/psb.24138

Cited by 26 publications

(18 citation statements)

References 24 publications

(121 reference statements)

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“…It was noted that arginine was the second most abundant amino acid found in the samples which is related to the role of arginine as a storage and carrier form of nitrogen in plants. This was consistent with other nut types (Shi & Chan, 2013;Venkatachalam & Sathe, 2006). Studies have also indicated that arginine plays a role in the vasodilation of blood vessels in the human body.…”

Section: Amino Acid Profilessupporting

confidence: 73%

Nutrient Composition of Raw, Dry-Roasted, and Skin-On Cashew Nuts

Griffin

Dean

2017

JFR

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Cashew nuts are the second most popular tree nut in the US with sales growing at a rate of 7% per annum. The highest quality cashew nuts are traditionally whole, oil-roasted, and devoid of skins. The development of a technique to remove the caustic cashew nut shell liquid from cashews and leave the skins intact allows for the production of novel cashew products including skin-on or "wrapped" in addition to raw and dry roasted products. This study investigated the nutritional characteristics of these newer cashew products. These products were found to contain bioactive compounds including mono-and poly-unsaturated fatty acids, phytosterols, arginine, magnesium, tocopherols, and phenolic compounds. All the types of cashews exhibited higher levels of phytosterols than the amounts reported for other tree nuts. The skin-on cashews had higher levels of phenolic compounds compared to the other cashew varieties tested, indicating additional health benefits of consuming cashew nuts with skins.

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Section: Amino Acid Profilessupporting

confidence: 73%

Nutrient Composition of Raw, Dry-Roasted, and Skin-On Cashew Nuts

Griffin

Dean

2017

JFR

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“…April May June components of the plant's capacity to survive abiotic stresses (Shi and Chan, 2013). Leaf concentrations of antioxidants and phenols were significantly increased relative to the untreated control plants by foliar-applied t-Z and MLE.…”

Section: Concn (Ngág L1 Dw) Z Hormone Abbreviationmentioning

confidence: 93%

Exogenous Applications of Moringa Leaf Extract and Cytokinins Improve Plant Growth, Yield, and Fruit Quality of Cherry Tomato

Basra

Lovatt

2016

hortte

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Growth-promoting properties of moringa (Moringa oleifera) leaves were investigated for potential use in crop production by comparing the efficacy of bimonthly foliar and root applications of a moringa leaf extract [MLE (3.3% w/v)] with the cytokinins 6-benzyladenine (6-BA) and trans-zeatin (t-Z), each at 25 mg·L−1, to increase plant growth, flowering, yield, fruit size, and fruit quality of ‘Super Sweet 100’ cherry tomato (Solanum lycopersicum). Foliar-applied t-Z and root-applied MLE increased canopy biomass (P ≤ 0.01) and root- and foliar-applied MLE increased lateral vegetative shoot number (P ≤ 0.001) and plant height (P ≤ 0.001) relative to untreated control plants. Only foliar-applied MLE increased floral shoot number compared with untreated control plants (P ≤ 0.001). Plants in all treatments, except root-applied 6-BA, produced more flowers than untreated control plants (P ≤ 0.001). Plants receiving root-applied t-Z produced the greatest number of flowers followed by plants receiving root-applied MLE. Cherry tomato plants treated with root-applied t-Z or MLE produced the greatest number of fruit per plant and significantly more than untreated control plants (P ≤ 0.001). Foliar-applied 6-BA and MLE and root-applied t-Z and MLE increased yield as grams of fruit per plant compared with the untreated control (P ≤ 0.01). Foliar- and root-applied MLE increased fruit concentrations of soluble sugars (P ≤ 0.001), protein (P ≤ 0.001), antioxidants (P ≤ 0.001), and lycopene (P ≤ 0.001) compared with fruit from untreated control plants. Foliar- and/or root-applied MLE resulted in the greatest leaf concentrations of protein (P ≤ 0.01), proline (P ≤ 0.01), arginine (P ≤ 0.01), and total antioxidants (P ≤ 0.05), which were all significantly greater than the concentrations in leaves from untreated control plants. The results of this single experiment provide evidence suggesting that MLE warrants further research as an inexpensive growth promoter for enhancing tomato plant biomass, yield, and fruit quality, especially in organic crop production, which prohibits the use of many commercial synthetic plant growth regulators.

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“…For instance, trypanosomes, unicellular parasitic flagellate protozoa, are reported to evade host NO-mediated defense responses by stimulating the expression of arginase genes [34], which might result in better stress tolerance and regulation of reactive oxygen species [35]. In A. thaliana, arginase genes mediate a cross talk between NO and polyamine biosynthesis [36]. Here, we show that two important genes in this pathway, arginine decarboxylase 1 (ADC1) and arginine decarboxylase 2 (ADC2), are strongly up-regulated upon S. indica colonization.…”

Section: Discussionmentioning

confidence: 99%

Serendipita indica modulates expression of arginine metabolism genes during colonization of Arabidopsis thaliana roots

Anwar

Wieczorek²

2018

PAB

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Endophytic fungus Serendipita indica belongs to the order Sebacinales. It is an extremely versatile root endophyte colonizing more than 150 different plant species including the model plant Arabidopsis thaliana. Colonization of S. indica triggers enhanced growth, early flowering, increase in seed content, alteration of secondary metabolite pathways and adaption to different biotic and abiotic stresses. This is why this fungus got ample attention by the plant researchers. In this study, we report modulation in expression of argininosuccinate synthase (AS), argininosuccinate lyase (AL) and arginase 2 (ARGAH2) genes in A. thaliana as a result of S. indica colonization. Similarly, expression of GUS reporter gene driven by AS and ARGAH2 promoters in roots was altered. AS, AL and ARGAH2 genes were down-regulated at early stage of root colonization i.e at 3 days post inoculation (dpi), with a subsequent up-regulation at later stages (7 and 14 dpi). Other arginine catabolism genes, Arginine decarboxylase-1 (ADC1), Arginine decarboxylase-2 (ADC2) and Pyrroline-5-carboxylate reductase (P5CR) were strongly upregulated at later stages of S. indica colonization. Our findings show significant changes in expression of several important genes in arginine metabolic pathway upon S. indica colonization. These changes are very specific and strongly depend on the colonization phase of the fungus.

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In vivo role ofArabidopsisarginase in arginine metabolism and abiotic stress response

Abstract: Arginine is an important amino acid in plants, as a medium for the transport and storage of nitrogen (N) and a precursor for the synthesis of polyamines and nitric oxide (NO).

Cited by 26 publications

References 24 publications

Nutrient Composition of Raw, Dry-Roasted, and Skin-On Cashew Nuts

Nutrient Composition of Raw, Dry-Roasted, and Skin-On Cashew Nuts

Exogenous Applications of Moringa Leaf Extract and Cytokinins Improve Plant Growth, Yield, and Fruit Quality of Cherry Tomato

Serendipita indica modulates expression of arginine metabolism genes during colonization of Arabidopsis thaliana roots

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