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Biochemical and transcriptome analyses of a novel chlorophyll-deficient chlorina tea plant cultivar

Overview of attention for article published in BMC Plant Biology, December 2014
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Title
Biochemical and transcriptome analyses of a novel chlorophyll-deficient chlorina tea plant cultivar
Published in
BMC Plant Biology, December 2014
DOI 10.1186/s12870-014-0352-x
Pubmed ID
Authors

Lu Wang, Chuan Yue, Hongli Cao, Yanhua Zhou, Jianming Zeng, Yajun Yang, Xinchao Wang

Abstract

BackgroundThe tea plant (Camellia sinensis (L.) O. Kuntze) is one of the most economically important woody crops. Recently, many leaf color genotypes have been developed during tea plant breeding and have become valuable materials in the processing of green tea. Although the physiological characteristics of some leaf color mutants of tea plants have been partially revealed, little is known about the molecular mechanisms leading to the chlorina phenotype in tea plants.ResultsThe yellow-leaf tea cultivar Zhonghuang 2 (ZH2) was selected during tea plant breeding. In comparison with Longjing 43 (LJ43), a widely planted green tea cultivar, ZH2 exhibited the chlorina phenotype and displayed significantly decreased chlorophyll contents. Transmission electron microscopy analysis revealed that the ultrastructure of the chloroplasts was disrupted, and the grana were poorly stacked in ZH2. Moreover, the contents of theanine and free amino acids were significantly higher, whereas the contents of carotenoids, catechins and anthocyanin were lower in ZH2 than in LJ43. Microarray analysis showed that the expression of 259 genes related to amino acid metabolism, photosynthesis and pigment metabolism was significantly altered in ZH2 shoots compared with those of LJ43 plants. Pathway analysis of 4,902 differentially expressed genes identified 24 pathways as being significantly regulated, including `cysteine and methionine metabolism¿, `glycine, serine and threonine metabolism¿, `flavonoid biosynthesis¿, `porphyrin and chlorophyll metabolism¿ and `carotenoid biosynthesis¿. Furthermore, a number of differentially expressed genes could be mapped to the `theanine biosynthesis¿, `chlorophyll biosynthesis¿ and `flavonoid biosynthesis¿ pathways. Changes in the expression of genes involved in these pathways might be responsible for the different phenotype of ZH2.ConclusionA novel chlorophyll-deficient chlorina tea plant cultivar was identified. Biochemical characteristics were analyzed and gene expression profiling was performed using a custom oligonucleotide-based microarray. This study provides further insights into the molecular mechanisms underlying the phenotype of the chlorina cultivar of Camellia sinensis.

Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 45 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 45 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 9 20%
Student > Ph. D. Student 8 18%
Student > Bachelor 6 13%
Student > Postgraduate 4 9%
Student > Master 4 9%
Other 8 18%
Unknown 6 13%
Readers by discipline Count As %
Agricultural and Biological Sciences 23 51%
Biochemistry, Genetics and Molecular Biology 8 18%
Chemical Engineering 2 4%
Chemistry 2 4%
Medicine and Dentistry 1 2%
Other 1 2%
Unknown 8 18%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 27 December 2014.
All research outputs
#15,313,289
of 22,775,504 outputs
Outputs from BMC Plant Biology
#1,481
of 3,239 outputs
Outputs of similar age
#213,934
of 361,224 outputs
Outputs of similar age from BMC Plant Biology
#51
of 99 outputs
Altmetric has tracked 22,775,504 research outputs across all sources so far. This one is in the 22nd percentile – i.e., 22% of other outputs scored the same or lower than it.
So far Altmetric has tracked 3,239 research outputs from this source. They receive a mean Attention Score of 3.0. This one is in the 42nd percentile – i.e., 42% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 361,224 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 31st percentile – i.e., 31% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 99 others from the same source and published within six weeks on either side of this one. This one is in the 43rd percentile – i.e., 43% of its contemporaries scored the same or lower than it.