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Carbon stocks of coastal wetland ecosystems on Hainan Island, China

100%

Gao T., Ding D., Guan W., Liao B.

Polish Journal of Environmental Studies

2018

tom 27

nr 3

Coastal wetland ecosystems have a great capacity to store carbon (C), and the condition has a significant influence on carbon emissions and segregation. This study aims to estimate carbon stocks in both vegetation and soil of coastal wetland ecosystems, and to compare the C stocks of different ecosystems and soil layers. This study classified coastal wetland ecosystems into six types, and C stocks were quantified through the measurement of vegetation biomass and soil C. The C stocks of estuaries, muddy beaches, coastal saltwater lakes, mangroves, deltas, and seagrass beds were 210.73, 243.00, 167.41, 426.57, 185.88, and 297.85 MgC ha⁻¹, respectively. Mangroves were found to be the most carbon-rich ecosystem. The total organic C content (TOC) of soil decreased with soil depth and was the highest in the top 0-20 cm layer. The total C storage of coastal wetland ecosystems in Hainan Island was 56.51×10⁵ Mg of C. These estimates show that there is an urgent requirement to protect coastal wetland ecosystems.

Proteomic analysis of plumules and coleoptiles in maize between hybrids and their corresponding inbred lines

76%

Jin X., Fu Z., Ding D., Li W., Liu Z., Hu Y., Tang J.

Acta Physiologiae Plantarum

2014

tom 36

nr 02

The plumule and coleoptile influence the emergence and vigor of the seedling and demonstrate distinct heterosis during maize (Zea mays L.) development. Comparative two-dimensional analysis was performed on plumules and coleoptiles from 3.5 days-cultivated seedlings of five widely used hybrids in China and their corresponding parental lines to dissect the genetic mechanism of heterosis. Compared to their parental lines, 64 % (2,127/ 3,310) of the differentially expressed proteins were nonadditively accumulated in the five hybrids. Up-regulated above the high parent, a similar expression pattern in all five tested hybrids, was the major expression pattern accounting for 68 % (1,446/2,127) nonadditive proteins. Forty-two nonadditive protein spots with significant differences between the hybrids and their parental lines were analyzed by mass spectra. Homology searches separated them into six groups with two abundant functional classes of cell detoxification (33 %) and metabolism (26 %), implying their importance for heterotic manifestation of the different hybrids at 3.5 days-cultivated seedling stage. The differential accumulation and expression of herbicide safener protein 1 in cell detoxification implied that exploration of the molecular mechanism of heterosis should be studied in a systematic network. Four potential functional polymorphisms were identified in SBP1 gene providing possible interpretation for the differential expression of SBP1 at transcriptional and translational levels.

Investigation of miR396 and growth-regulating factor regulatory network in maize grain filling

76%

Zhang K., Shi X., Zhao X., Ding D., Tang J., Niu J.

Acta Physiologiae Plantarum

2015

tom 37

nr 02

The miR396 and growth-regulating factor (GRF) regulatory network is evolutionarily conserved among plant species. The orthologous GRF genes in rice were involved in regulating grain development, and targeted by miR396. However, there are still no more information about the involvement of miR396 and GRF genes in maize grain. In this article, RNA sequencing was performed on the developing maize kernels to analyze the dynamic profiles of miR396 and GRF genes and explore their possible regulatory roles during maize effective grain filling. Our results showed that GRF genes were also the conserved targets of miR396 in maize, according to computational prediction and validated by degradome sequencing. MiR396 expressed high and gradually declined with advancing maize grain filling, significant negatively correlated with its target GRF genes, which mostly increased continuously. Our test also provided a testimony of miR396-GRF network in different regulations between the development of maize embryo and endosperm by real-time quantitative PCR. And further analysis of expression pattern suggested that miR319, miR166, and RDR might interact with miR396-GRF network during grain development in maize. This study mainly provided a valuable foundation for future comprehensive analysis of miR396-GRF network, and further research work is needed to confirm the regulatory roles of miR396 and GRF genes during grain filling in maize.

Ograniczanie wyników

2 Acta Physiologiae Plantarum

1 Polish Journal of Environmental Studies

3 Ding D.

2 Tang J.

1 Fu Z.

1 Gao T.

1 Guan W.

1 Hu Y.

1 Jin X.

1 Li W.

1 Liao B.

1 Liu Z.

1 Niu J.

1 Shi X.

1 Zhang K.

1 Zhao X.

1 2018

1 2015

1 2014

Wyniki wyszukiwania

Carbon stocks of coastal wetland ecosystems on Hainan Island, China

Proteomic analysis of plumules and coleoptiles in maize between hybrids and their corresponding inbred lines

Investigation of miR396 and growth-regulating factor regulatory network in maize grain filling