Determination of Camellia oleifera Abel. Germplasm Resources of Genetic Diversity in China using ISSR Markers

Cheng, Junyong; Jiang, Dezhi; Cheng, Hua; Zhou, Xihua; Fang, Yingyou; Zhang, Xuehua; Xiao, Xian; Deng, Xun; Li, Linling

doi:10.15835/nbha46211092

Cited by 10 publications

(9 citation statements)

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“…Camellia oleifera is an endemic oil plant of China, widely distributed in southern China. The most valuable C. oleifera -based product is camellia seed oil, which has been shown to enhance human immunity, reduce blood pressure, and prevent cardiovascular and cerebrovascular diseases [ 6 ]. In addition to camellia seed oil, C. oleifera also produces a variety of secondary metabolites, such as saponins, polyphenols, and flavonoids, which are also widely used [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Diversity and Antifungal Activity of Endophytic Fungi Associated with Camellia oleifera

Wu²,

He³

et al. 2018

Mycobiology

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Endophytic fungi strains (n = 81) were isolated from the leaves, barks, and fruits of Camellia oleifera from Hunan province (China) to delineate their species composition and potential as biological control agents of C. oleifera anthracnose. The fungi were identified by morphological and phylogenetic analyses. Fungal colonization rates of the leaves, barks, and fruits were 58.02, 27.16, and 14.81%, respectively. The isolates were identified as 14 genera, belonging to two subdivisions, Deuteromycotina and Ascomycotina; 87.65% of all isolates belonged to Deuteromycotina. The dominant species, occurring with a high relative frequency, were Pestalotiopsis sp. (14.81%), Penicillium sp. (14.81%), and Fusarium sp. (12.35%). The Simpson’s and Shannon’s diversity indices revealed the highest species diversity in the leaves, followed by the barks and fruits. The similarity index for the leaves versus barks comparison was the highest, indicating that the number of endophytic fungal species shared by the leaves and barks was higher than barks and fruits or leaves and fruits. Based on the results of dual culture experiments, only five strains exhibited antifungal activity against C. oleifera anthracnose pathogen, with isolate ty-64 (Oidium sp.) generating the broadest inhibition zones. Our results indicate that the endophytes associated with C. oleifera could be employed as natural agents controlling C. oleifera anthracnose.

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Section: Introductionmentioning

confidence: 99%

Diversity and Antifungal Activity of Endophytic Fungi Associated with Camellia oleifera

Wu²,

He³

et al. 2018

Mycobiology

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“…(2017); Igwe and Afiukwa (2017) and Cheng et al (2018) which stated that the cluster analysis grouped their population into more than two groups. However, apart from the genetic similarities or divergence, some of the oil palm progenies like progeny 3023 and progeny 2211 which are both susceptible were grouped in the same cluster because they share the same ancestry/ parentage; this is in accordance with the report of Okoye (2016) which stated the dendrogram classification of accessions into various clades with parents' grouped separately into a clade using SSR markers.…”

Section: Discussionmentioning

confidence: 99%

Assessment of genetic diversity in Fusarium wilt tolerant and susceptible oil palm (Elaeis guineensis Jacq) progenies in Nigeria using inter- simple sequence repeat (ISSR) molecular markers

Chidi¹,

Adekunle²,

Samuel³

et al. 2019

Preprint

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Background Improving oil palm in Nigeria for food security and subsequent export requires a better understanding of the genetic diversity among oil palm progenies tolerant and susceptible to Fusarium wilt disease. In view of the limitations of the orthodox method used in screening this disease, and the advantages of molecular markers, fourteen (14) Inter-simple sequence repeat (ISSR) DNA markers were applied to evaluate the genetic diversity, population structure and cluster resolutions of alleles responsible for tolerance of 560 Elaeis guineensis Jacq palms representing 8 different progenies distributed across NigeriaResults The amplification product revealed a moderately high level of genetic diversity with a total of 46 alleles identified, resulting in an average of 4.9091 alleles per locus detected between the oil palm progenies. Polymorphic information content (PIC) values varied between 0.3706-0.7861, with a mean value of 0.6829. The genetic diversity values ranged from 0.4063-0.8125 with a mean of 0.7216, while the major allele frequency ranged from 0.2500- 0.7500 with a mean value of 0.3750. Shannon's information index (I), Nei's gene diversity (H), and the effective number of alleles (Ne) had values of 0.6931, 0.5000, and 2.000, respectively. The genetic diversity was highest in progeny 3023, and lowest in progeny 4189. Mean values of the total gene diversity (Ht), gene diversity within the population (Hs) of the progenies, coefficient of gene differentiation among the progenies (Gst) and level of gene flow (Nm) were 0.4899, 0.3520, 0.2815 and 1.2764, respectively. The dendrogram clustered the progenies into six major clusters, while Principal Component Analysis (PCA) grouped the progenies into five clusters. PCA further identified the coordinate positions of tolerant and susceptible alleles of oil palm progeniesConclusion This study confirmed the identification of the coordinate positions of tolerant alleles in the gene loci, which could be exploited by breeders to developing tolerant oil palm seedlings.

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“…It is known as one of the world's four largest woody oil plants with oil palm, olive and coconut [ 2 ]. The seed of C. oleifera has high oil content with nutrition and healthcare value [ 3 – 5 ]. However, the low yield of C. oleifera seeds has been seriously restricting the healthy development of the C. oleifera industry [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Hormone analysis and candidate genes identification associated with seed size in Camellia oleifera

Song

et al. 2022

R. Soc. open sci.

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Camellia oleifera is an important woody oil species in China. Its seed oil has been widely used as a cooking oil. Seed size is a crucial factor influencing the yield of seed oil. In this study, the horizontal diameter, vertical diameter and volume of C. oleifera seeds showed a rapid growth tendency from 235 days after pollination (DAP) to 258 DAP but had a slight increase at seed maturity. During seed development, the expression of genes related to cell proliferation and expansion differ greatly. Auxin plays an important role in C. oleifera seeds; YUC4 and IAA17 were significantly downregulated. Weighted gene co-expression network analysis screened 21 hub transcription factors for C. oleifera seed horizontal diameter, vertical diameter and volume. Among them, SPL4 was significantly decreased and associated with all these three traits, while ABI4 and YAB1 were significantly increased and associated with horizontal diameter of C. oleifera seeds. Additionally, KLU significantly decreased (2040-fold). Collectively, our data advances the knowledge of factors related to seed size and provides a theoretical basis for improving the yield of C. oleifera seeds.

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Determination of Camellia oleifera Abel. Germplasm Resources of Genetic Diversity in China using ISSR Markers

Cited by 10 publications

References 0 publications

Diversity and Antifungal Activity of Endophytic Fungi Associated with Camellia oleifera

Diversity and Antifungal Activity of Endophytic Fungi Associated with Camellia oleifera

Assessment of genetic diversity in Fusarium wilt tolerant and susceptible oil palm (Elaeis guineensis Jacq) progenies in Nigeria using inter- simple sequence repeat (ISSR) molecular markers

Hormone analysis and candidate genes identification associated with seed size in Camellia oleifera

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