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Saarela Jeffery - One of the best experts on this subject based on the ideXlab platform.

Sokoloff Paul - One of the best experts on this subject based on the ideXlab platform.

R. Amils - One of the best experts on this subject based on the ideXlab platform.

  • Differential iron management in monocotyledon and dicotyledon plants from the Río Tinto basin
    Protoplasma, 2020
    Co-Authors: V. Fuente, L. Rufo, N. Rodríguez, E. Ramírez, I. Sánchez-gavilán, R. Amils
    Abstract:

    The study of plants adapted to an extreme environment with a high concentration of iron such as Río Tinto allowed the study of important elements for the development and control of plant growth including their localization, management, and storage. The absorption, transport, and accumulation of iron were studied in different species of dicotyledons ( Sarcocornia pruinosa , Salicornia patula , Arthrocnemum macrostachyum , and Halogeton sativus of the Chenopodiaceae family) and monocotyledons ( Imperata cylindrica , Cynodon dactylon , and Panicum repens from the Poaceae family), all obtained from the Río Tinto banks in different sample collection campaigns. The results clearly show that phytoferritin is not observed in the chloroplast of monocotyledons, an important difference from what is observed in dicotyledons. The presence of plastids with a high concentration of iron in the sieve tubes of monocotyledons strongly suggests their possible role in the transport and accumulation of iron in these plants.

Juncheng Wang - One of the best experts on this subject based on the ideXlab platform.

  • Single-molecule long-read transcriptome dataset of halophyte Halogeton glomeratus
    2017
    Co-Authors: Juncheng Wang
    Abstract:

    The predicted CDSs of isoforms in Halogeton glomeratus transcriptome.

  • Single-molecule long-read transcriptome dataset of halophyte Halogeton glomeratus
    2017
    Co-Authors: Juncheng Wang
    Abstract:

    All of the isoform sequences of Halogeton glomeratus by Pacific Biosciences Isoform sequencing (Iso-Seq) technolog

  • physiological and proteomic analyses of salt stress response in the halophyte Halogeton glomeratus
    Plant Cell and Environment, 2015
    Co-Authors: Juncheng Wang, Yaxiong Meng, Yong Lai, Ke Yang, Xunwu Shang, Huajun Wang, Di Wang
    Abstract:

    Very little is known about the adaptation mechanism of Chenopodiaceae Halogeton glomeratus, a succulent annual halophyte, under saline conditions. In this study, we investigated the morphological and physiological adaptation mechanisms of seedlings exposed to different concentrations of NaCl treatment for 21 d. Our results revealed that H. glomeratus has a robust ability to tolerate salt; its optimal growth occurs under approximately 100 mm NaCl conditions. Salt crystals were deposited in water-storage tissue under saline conditions. We speculate that osmotic adjustment may be the primary mechanism of salt tolerance in H. glomeratus, which transports toxic ions such as sodium into specific salt-storage cells and compartmentalizes them in large vacuoles to maintain the water content of tissues and the succulence of the leaves. To investigate the molecular response mechanisms to salt stress in H. glomeratus, we conducted a comparative proteomic analysis of seedling leaves that had been exposed to 200 mm NaCl for 24 h, 72 h and 7 d. Forty-nine protein spots, exhibiting significant changes in abundance after stress, were identified using matrix-assisted laser desorption ionization tandem time-of-flight mass spectrometry (MALDI-TOF/TOF MS/MS) and similarity searches across EST database of H. glomeratus. These stress-responsive proteins were categorized into nine functional groups, such as photosynthesis, carbohydrate and energy metabolism, and stress and defence response.

  • transcriptomic profiling of the salt stress response in the halophyte Halogeton glomeratus
    BMC Genomics, 2015
    Co-Authors: Juncheng Wang, Yaxiong Meng, Yong Lai, Ke Yang, Panrong Ren, Xunwu Shang, Huajun Wang
    Abstract:

    Halogeton glomeratus (H. glomeratus) is an extreme halophyte that is widely distributed in arid regions, including foothills, the Gobi desert of northwest China, and the marginal loess of Central Asia. However, research on the salt-tolerant mechanisms and genes of this species are limited because of a lack of genomic sequences. In the present study, the transcriptome of H. glomeratus was analyzed using next-generation sequencing technology to identify genes involved in salt tolerance and better understand mechanisms of salt response in the halophyte H. glomeratus. Illumina RNA-sequencing was performed in five sequencing libraries that were prepared from samples treated with 200 mM NaCl for 6, 12, 24, and 72 h and a control sample to investigate changes in the H. glomeratus transcriptome in response to salt stress. The de novo assembly of five transcriptomes identified 50,267 transcripts. Among these transcripts, 31,496 (62.66%) were annotated, including 44 Gene Ontology (GO) terms and 128 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. Compared with transcriptomes from the control and NaCl-treated samples, there were 2,223, 5,643, 7,510 and 10,908 genes that were differentially expressed after exposure to NaCl for 6, 12, 24, and 72 h, respectively. One hundred and eighteen salt-induced genes were common to at least two stages of salt stress, and 291 up-regulated genes were common to various stages of salt stress. Numerous genes that are related to ion transport, reactive oxygen species scavenging, energy metabolism, hormone-response pathways, and responses to biotic and abiotic stress appear to play a significant role in adaptation to salinity conditions in this species. The detection of expression patterns of 18 salt-induced genes by quantitative real-time polymerase chain reaction were basically consistent with their changes in transcript abundance determined by RNA sequencing. Our findings provide a genomic sequence resource for functional genetic assignments of an extreme halophyte, H. glomeratus. We believe that the transcriptome datasets will help elucidate the genetic basis of this species’ response to a salt environment and develop stress-tolerant crops based on favorable wild genetic resources.

Freebury Colin - One of the best experts on this subject based on the ideXlab platform.

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