alexa Reproductive limits of a late-flowering high-mountain Mediterranean plant along an elevational climate gradient.
Environmental Sciences

Environmental Sciences

Journal of Ecosystem & Ecography

Author(s): GimnezBenavides L, Escudero A, Iriondo JM

Abstract Share this page

Abstract Mountain plants are particularly sensitive to climate warming because snowmelt timing exerts a direct control on their reproduction. Current warming is leading to earlier snowmelt dates and longer snow-free periods. Our hypothesis is that high-mountain Mediterranean plants are not able to take advantage of a lengthened snow-free period because this leads to longer drought that truncates the growing season. However, reproductive timing may somewhat mitigate these negative effects through temporal shifts. We assessed the effects of flowering phenology on the reproductive success of Silene ciliata, a Mediterranean high-mountain plant, across an altitudinal gradient during two climatically contrasting years. The species showed a late-flowering pattern hampering the use of snowmelt water. Plant fitness was largely explained by the elapsed time from snowmelt to onset of flowering, suggesting a selective pressure towards early flowering caused by soil moisture depletion. The proportion of flowering plants decreased at the lowest population, especially in the drier year. Plants produced more flowers, fruits and seeds at the highest population and in the mild year. Our results indicate that water deficit in dry years could threaten the lowland populations of this mountainous species, while high-altitude environments are more stable over time. This article was published in New Phytol and referenced in Journal of Ecosystem & Ecography

Relevant Expert PPTs

Relevant Speaker PPTs

  • Anjana Rajput
    Conservation of superior phenotypes of teak (Tectona grandis) in central India
    PPT Version | PDF Version
  • Sylvia Jagerroos
    Conservation of Biodiversity during Decomissioning of Oil and Gas facilities
    PPT Version | PDF Version
  • Rado H Andriamasimanana
    Prioritising areas for biodiversity conservation to inform the Mahavavy-Kinkony Wetland Complex management plan, Madagascar
    PPT Version | PDF Version
  • K Mulkijanyan
    Plant biopolymers from Boraginaceae family species and their synthetic derivatives: Prospective pharmacological agents
    PPT Version | PDF Version
  • Yosef Yarden
    Classically, the 3’untranslated region (3’UTR) is that region in eukaryotic protein-coding genes from the translation termination codon to the polyA signal. It is transcribed as an integral part of the mRNA encoded by the gene. However, there exists another kind of RNA, which consists of the 3’UTR alone, without all other elements in mRNA such as 5’UTR and coding region. The importance of independent 3’UTR RNA (referred as I3’UTR) was prompted by results of artificially introducing such RNA species into malignant mammalian cells. Since 1991, we found that the middle part of the 3’UTR of the human nuclear factor for interleukin-6 (NF-IL6) or C/EBP gene exerted tumor suppression effect in vivo. Our subsequent studies showed that transfection of C/EBP 3’UTR led to down-regulation of several genes favorable for malignancy and to up-regulation of some genes favorable for phenotypic reversion. Also, it was shown that the sequences near the termini of the C/EBP 3’UTR were important for its tumor suppression activity. Then, the C/EBP 3’UTR was found to directly inhibit the phosphorylation activity of protein kinase CPKC in SMMC-7721, a hepatocarcinoma cell line. Recently, an AU-rich region in the C/EBP 3’UTR was found also to be responsible for its tumor suppression. Recently we have also found evidence that the independent C/EBP 3’UTR RNA is actually exists in human tissues, such as fetal liver and heart, pregnant uterus, senescent fibroblasts etc. Through 1990’s to 2000’s, world scientists found several 3’UTR RNAs that functioned as artificial independent RNAs in cancer cells and resulted in tumor suppression. Interestingly, majority of genes for these RNAs have promoter-like structures in their 3’UTR regions, although the existence of their transcribed products as independent 3’UTR RNAs is still to be confirmed. Our studies indicate that the independent 3’UTR RNA is a novel non-coding RNA species whose function should be the regulation not of the expression of their original mRNA, but of some essential life activities of the cell as a whole.
    PPT Version | PDF Version
  • R. K. Pandey
    Community oriented integrated ecosystem approach for conservation and sustainable management of forest genetic resources: Challenges in biodiversity conservation in natural tropical forests of India
    PPT Version | PDF Version
  • Chioma Nwakanma
    FISH SPECIES IDENTIFICATION AND BIODIVERSIFICATION IN ENUGU METROPOLIS RIVER BY DNA BARCODING
    PPT Version | PDF Version
  • Paul W Sammarco
    Geomorphological relief on mesophotic banks of the northern Gulf of Mexico, including geographic patterns and relationship to benthic species diversity
    PPT Version | PDF Version
  • Ballagere Puttaraju Harini
    Distribution and divergence of few common termites species: A study at Jnanabharathi
    PPT Version | PDF Version
  • Suneetha Kota
    Rice varieties compatible for conservation Agriculture: Breeding perspectives
    PPT Version | PDF Version
  • S.P. Goyal
    Achievements and challenges in development of Wildlife Forensics in south-east Asia for controlling illegal trade for biodiversity conservation: A case study from India
    PPT Version | PDF Version
  • Madhu Choudhary
    Lignocellulolytic activity of soil fungi isolated from different scenarios of Conservation Agriculture
    PPT Version | PDF Version
  • Anna Lange-Consiglio
    AMNIOTIC DERIVED PROGENITOR CELLS IN DIFFERENT ANIMAL SPECIES IN VIEW OF CELL THERAPY APPLICATIONS
    PPT Version | PDF Version
  • Mirza Ismail Baig
    Advances in anaerobic fermentation techniques for conservation of forages for small holders
    PPT Version | PDF Version
  • Iqbal Parwez
    Genetic diversity and molecular declining population of four Channid species from North India and possible strategies
    PPT Version | PDF Version

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords