Capsaicin accumulation is related to nitrate content in placentas of habanero peppers (<i>Capsicum chinense</i> Jacq.)

Monforte‐González, Miriam; Guzmán-Antonio, Adolfo; Uuh-Chim, Francisco; Vázquez‐Flota, Felipe

doi:10.1002/jsfa.3880

Cited by 48 publications

(25 citation statements)

References 17 publications

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“…In fact, the content of K + in habanero pepper roots is maintained at low and moderate concentrations of NaCl (Bojórquez-Quintal et al, 2014). The successful cultivation and production of habanero pepper fruits is directly related to K + availability (Monforte-Gonzalez et al, 2010) and salt stress induces the leakage of K + . Taking into account that maintenance of K + absorption and decrease in Na + accumulation represents an important strategy in developing tolerance to saline stress (Shabala and Cuin, 2008) and that the habanero pepper ( C. chinense ) actually is grown intensively in the southern region of Mexico where salinity problems could arise in the future (Delgado et al, 2010), the overexpression of Na + -insensitive K + transporters such as CcHAK1 provides an attractive alternative for the improvement of glycophyte species production such as the peppers and to enhance salt tolerance of plants.…”

Section: Discussionmentioning

confidence: 99%

“…The production of habanero pepper fruits is directly related to K + availability, and addition of this nutrient to the soil solution is necessary for their successful cultivation (Monforte-Gonzalez et al, 2010). However, the K + fertilization seems not required for flowering, possibly due to the existence of efficient transport systems of K + operating in this plant (Medina-Lara et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Molecular Cloning and Functional Analysis of a Na+-Insensitive K+ Transporter of Capsicum chinense Jacq

et al. 2016

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High-affinity K+ (HAK) transporters are encoded by a large family of genes and are ubiquitous in the plant kingdom. These HAK-type transporters participate in low- and high-affinity potassium (K+) uptake and are crucial for the maintenance of K+ homeostasis under hostile conditions. In this study, the full-length cDNA of CcHAK1 gene was isolated from roots of the habanero pepper (Capsicum chinense). CcHAK1 expression was positively regulated by K+ starvation in roots and was not inhibited in the presence of NaCl. Phylogenetic analysis placed the CcHAK1 transporter in group I of the HAK K+ transporters, showing that it is closely related to Capsicum annuum CaHAK1 and Solanum lycopersicum LeHAK5. Characterization of the protein in a yeast mutant deficient in high-affinity K+ uptake (WΔ3) suggested that CcHAK1 function is associated with high-affinity K+ uptake, with Km and Vmax for Rb of 50 μM and 0.52 nmol mg−1 min−1, respectively. K+ uptake in yeast expressing the CcHAK1 transporter was inhibited by millimolar concentrations of the cations ammonium (NH4+) and cesium (Cs+) but not by sodium (Na+). The results presented in this study suggest that the CcHAK1 transporter may contribute to the maintenance of K+ homeostasis in root cells in C. chinense plants undergoing K+-deficiency and salt stress.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular Cloning and Functional Analysis of a Na+-Insensitive K+ Transporter of Capsicum chinense Jacq

et al. 2016

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“…Many Capsicum spp. are spicy, and are therefore primarily used as spices, 59 except for some sweet peppers, which are generally mild in flavor [1,2]. The main pungent components of 70 pungent components in various parts of the Capsicum plant can reveal whether they can be used as a 71 substitute for Capsicum fruits in food.…”

Section: Introductionmentioning

confidence: 99%

Capsicum cultivated under adverse conditions in Southern Japan produces higher concentrations of antioxidants and pungent components

Kajiya

Yamanouchi

Tanaka

et al. 2019

Preprint

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AbstractGrowing crops in sabulous soils is often challenging due to their limited oligotrophy and weak water retention. However, some plants adapt to these adverse growth conditions, and in some cases, favorable properties are imparted to the fruit. This study investigated the influence of the cultivation environment on Capsicum by assessing the levels and functions of both pungent components and antioxidants when cultivated in sandy soils in Southern Japan; these parameters were then compared to those in traditional tropical-origin Capsicum. In seven varieties of Capsicum, the distribution of capsaicin and dihydrocapsaicin differed between the pericarp and seeds within the placenta. The leaves and fruits of Habanero orange and Tabasco, which are the most suitable for cultivation in sandy soil, were collected during the cultivation period and analyzed in terms of their size, color, and pungent component composition. Pungent components were detected in fruits only, and not in leaf or flower samples. In particular, we found that pungent components were generally present within the seeds and placenta. Antioxidant activity and nitric oxide production within human vascular endothelial cells were also evaluated to compare the differences in their functionality. Satsuma-Habanero orange cultivated under adverse conditions possessed the highest antioxidant activity. Furthermore, Satsuma-Capsicum cultivated under adverse conditions exhibited higher levels of antioxidants than traditional tropical-origin peppers, and induced similar levels of nitric oxide production in the vascular endothelial cells. We concluded that Capsicum cultivated in harsh environments produced beneficial effects such as higher levels of antioxidants and capsaicinoids in seeds and placenta. Moreover, the fruits from these plants could be harvested for a significantly longer period and took longer to spoil than traditional Capsicum; thus, they show merit as a viable commercial crop in Japan.

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“…Being a nitrogenous compound, nitrate fertilization also affects capsaicinoids accumulation . In peppers, this effect is directly related to the amount of nitrate that reaches the placenta . Since carbon availability has a direct effect on the accumulation of nitrogenous metabolites in plants, CO 2 variations would modify the accumulation of capsaicinoids in peppers.…”

Section: Introductionmentioning

confidence: 99%

“…8 In peppers, this effect is directly related to the amount of nitrate that reaches the placenta. 9 Since carbon availability has a direct effect on the accumulation of nitrogenous metabolites in plants, 10 CO 2 variations would modify the accumulation of capsaicinoids in peppers. We are interested in the effect that CO 2 variation may have on pepper production.…”

Section: Introductionmentioning

confidence: 99%

Enrichment of carbon dioxide in the atmosphere increases the capsaicinoids content in Habanero peppers (Capsicum chinense Jacq.)

et al. 2012

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Capsaicin accumulation is related to nitrate content in placentas of habanero peppers (Capsicum chinense Jacq.)

Abstract: Under the assayed conditions, nitrate content in the placenta affects capsaicin synthesis.

Cited by 48 publications

References 17 publications

Molecular Cloning and Functional Analysis of a Na+-Insensitive K+ Transporter of Capsicum chinense Jacq

Molecular Cloning and Functional Analysis of a Na+-Insensitive K+ Transporter of Capsicum chinense Jacq

Capsicum cultivated under adverse conditions in Southern Japan produces higher concentrations of antioxidants and pungent components

Enrichment of carbon dioxide in the atmosphere increases the capsaicinoids content in Habanero peppers (Capsicum chinense Jacq.)

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