Postharvest Processing and Storage Methods for
            <i>Camellia oleifera</i>
            Seeds

Zhu, Guangfei; Hai, Liu; Xie, Yucen; Liao, Qian; Lin, Yawen; Liu, Yanhong; Liu, Yunhua; Xiao, Hong‐Wei; Gao, Zhen-Jiang; Hu, Shuzhen

doi:10.1080/87559129.2019.1649688

Cited by 37 publications

(22 citation statements)

References 62 publications

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“…Therefore, it is listed among the priority healthy edible oils by the Food and Agriculture Organization 54 . Numerous studies have indicated that this oil is characterized by abundant UFAs that have significant health-related functions and therapeutic effects 55 , 56 . Because of this, systematic investigations and practical applications are expanding constantly.…”

Section: Discussionmentioning

confidence: 99%

Integrative iTRAQ-based proteomic and transcriptomic analysis reveals the accumulation patterns of key metabolites associated with oil quality during seed ripening of Camellia oleifera

Yan

et al. 2021

Hortic Res

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Camellia oleifera (C. oleifera) is one of the four major woody oil-bearing crops in the world and has relatively high ecological, economic, and medicinal value. Its seeds undergo a series of complex physiological and biochemical changes during ripening, which is mainly manifested as the accumulation and transformation of certain metabolites closely related to oil quality, especially flavonoids and fatty acids. To obtain new insights into the underlying molecular mechanisms, a parallel analysis of the transcriptome and proteome profiles of C. oleifera seeds at different maturity levels was conducted using RNA sequencing (RNA-seq) and isobaric tags for relative and absolute quantification (iTRAQ) complemented with gas chromatography-mass spectrometry (GC-MS) data. A total of 16,530 transcripts and 1228 proteins were recognized with significant differential abundances in pairwise comparisons of samples at various developmental stages. Among these, 317 were coexpressed with a poor correlation, and most were involved in metabolic processes, including fatty acid metabolism, α-linolenic acid metabolism, and glutathione metabolism. In addition, the content of total flavonoids decreased gradually with seed maturity, and the levels of fatty acids generally peaked at the fat accumulation stage; these results basically agreed with the regulation patterns of genes or proteins in the corresponding pathways. The expression levels of proteins annotated as upstream candidates of phenylalanine ammonia-lyase (PAL) and chalcone synthase (CHS) as well as their cognate transcripts were positively correlated with the variation in the flavonoid content, while shikimate O-hydroxycinnamoyltransferase (HCT)-encoding genes had the opposite pattern. The increase in the abundance of proteins and mRNAs corresponding to alcohol dehydrogenase (ADH) was associated with a reduction in linoleic acid synthesis. Using weighted gene coexpression network analysis (WGCNA), we further identified six unique modules related to flavonoid, oil, and fatty acid anabolism that contained hub genes or proteins similar to transcription factors (TFs), such as MADS intervening keratin-like and C-terminal (MIKC_MADS), type-B authentic response regulator (ARR-B), and basic helix-loop-helix (bHLH). Finally, based on the known metabolic pathways and WGCNA combined with the correlation analysis, five coexpressed transcripts and proteins composed of cinnamyl-alcohol dehydrogenases (CADs), caffeic acid 3-O-methyltransferase (COMT), flavonol synthase (FLS), and 4-coumarate: CoA ligase (4CL) were screened out. With this exploratory multiomics dataset, our results presented a dynamic picture regarding the maturation process of C. oleifera seeds on Hainan Island, not only revealing the temporal specific expression of key candidate genes and proteins but also providing a scientific basis for the genetic improvement of this tree species.

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Section: Discussionmentioning

confidence: 99%

Integrative iTRAQ-based proteomic and transcriptomic analysis reveals the accumulation patterns of key metabolites associated with oil quality during seed ripening of Camellia oleifera

Yan

et al. 2021

Hortic Res

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“…), which belongs to Theaceae , is an endemic woody edible oil tree species in China, and it is also one of the four major woody oil crops in the world (Liang et al., 2017). Camellia seed oil (CSO) is a vegetable oil extracted from camellia seeds, which fatty acid composition and physical and chemical properties are very similar to olive oil, so it is known as “Oriental Olive Oil” (Zhu et al., 2020). It is rich in monounsaturated fatty acids and a variety of functional active ingredients, such as squalene, phytosterols (β‐sitosterol, rapeseed sterol, and stigmasterol), polyphenols, fat‐soluble vitamins (vitamins A, B, E), and so on, which has high nutritional value and health‐care function (Shi et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Effects of different preheat treatments on volatile compounds of camellia ( Camellia oleifera Abel .) seed oil and formation mechanism of key aroma compounds

Zhou

et al. 2021

J. Food Biochem.

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Camellia oleifera (Camellia oleifera Abel.), which belongs to Theaceae, is an endemic woody edible oil tree species in China, and it is also one of the four major woody oil crops in the world (Liang et al., 2017). Camellia seed oil (CSO) is a vegetable oil extracted from camellia seeds, which fatty acid composition and physical and chemical properties are very similar to olive oil, so it is known as "Oriental Olive Oil" (Zhu et al., 2020). It is rich in monounsaturated fatty acids and a variety of functional active ingredients, such as squalene, phytosterols (β-sitosterol, rapeseed sterol, and stigmasterol), polyphenols, fat-soluble vitamins (vitamins A, B, E), and so on, which has high nutritional value and health-care function (Shi et al., 2020). Therefore, long-term consumption of CSO can prevent cardiovascular sclerosis, lower cholesterol, anti-oxidation, pro

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“…( C. oleifera ), belonging to genus Camellia in the family Theaceae , originates from China and is one of the world’s four major oil tree species (together with oil palm, olive and coconut) ( Chen et al 2015 ). It has been cultivated in south-central and southern China for more than 2,000 years ( Zhu et al 2020 ), due to its major product (nearly 50% of dry kernel weight), tea oil, is an edible oil known as “eastern olive oil” with high nutritional value and health benefits. The crop covers a huge area of approximately 4.4 million hectares with abundant resources and an annual output of over 2.4 million tons of seeds, and its oil yield is more than 0.6 million tons, and is distributed in the Hunan, Jiangxi, Guangxi, Fujian, Hainan and provinces ( Liu et al 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Assessment of genetic diversity in <i>Camellia oleifera</i> Abel. accessions using morphological traits and simple sequence repeat (SSR) markers

He¹,

Liu²,

Wang³

et al. 2020

Breed. Sci.

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Camellia oleifera Abel. ( C. oleifera ) is a cultivable plant with important economic value. It is very helpful for the scientific utilization, cultivation and preservation of germplasm resources through evaluating the genetic diversity. In this study, we estimated the genetic relationship of 150 accessions of C. oleifera using morphological and economic traits, as well as SSR molecular marker. Through the variation and cluster analysis of 17 morphological and economic traits, the germplasm was divided into a candidate core breeding group with higher economic traits and a core breeding group with higher morphological traits. The genetic similarity coefficients of SSR markers ranged from 0.05 to 0.91, and the germplasm materials were divided into five groups. The results demonstrated that C. oleifera germplasms perform a rich genetic variation. This is the first report to evaluate the genetic diversity of different C. oleifera germplasms using the morphological and economic traits, together with SSR molecular marker, and the results allow us to find evidence for the origin of varieties, establish core breeding populations and its fingerprint.

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Postharvest Processing and Storage Methods for Camellia oleifera Seeds

Cited by 37 publications

References 62 publications

Integrative iTRAQ-based proteomic and transcriptomic analysis reveals the accumulation patterns of key metabolites associated with oil quality during seed ripening of Camellia oleifera

Integrative iTRAQ-based proteomic and transcriptomic analysis reveals the accumulation patterns of key metabolites associated with oil quality during seed ripening of Camellia oleifera

Effects of different preheat treatments on volatile compounds of camellia ( Camellia oleifera Abel .) seed oil and formation mechanism of key aroma compounds

Assessment of genetic diversity in <i>Camellia oleifera</i> Abel. accessions using morphological traits and simple sequence repeat (SSR) markers

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