Growth Studies of Selected Plant Species with Well-Defined European Distributions: I. Field Observations and Computer Simulations on Plant Life Cycles at Two Altitudes

1984 ◽  
Vol 72 (3) ◽  
pp. 1019 ◽  
Author(s):  
F. I. Woodward ◽  
N. Jones
Keyword(s):  
Plant Species ◽  
Computer Simulations ◽  
Life Cycles ◽  
Field Observations ◽  
Plant Life ◽  
Growth Studies

Field Observations of Oviposition by a Specialist Herbivore on Plant Parts and Plant Species Unsuitable as Larval Food

2011 ◽  
Vol 40 (6) ◽  
pp. 1478-1486 ◽  
Author(s):  
Nicole D. Benda ◽  
Cavell Brownie ◽  
Coby Schal ◽  
Fred Gould
Keyword(s):  
Plant Species ◽  
Field Observations ◽  
Larval Food ◽  
Specialist Herbivore ◽  
Plant Parts

Reproduction in Plant Life Cycles

Biology ◽  
1998 ◽  
pp. 235-253
Author(s):  
Julian Sutton
Keyword(s):  
Life Cycles ◽  
Plant Life

scholarly journals Riders in the sky (islands): Using a mega-phylogenetic approach to understand plant species distribution and coexistence at the altitudinal limits of angiosperm plant life

2017 ◽  
Vol 44 (11) ◽  
pp. 2618-2630 ◽  
Author(s):  
Hannah E. Marx ◽  
Cédric Dentant ◽  
Julien Renaud ◽  
Romain Delunel ◽  
David C. Tank ◽  
...  
Keyword(s):  
Plant Species ◽  
Species Distribution ◽  
Sky Islands ◽  
Plant Life

scholarly journals Extensive transcriptional changes in the aphid species Myzus cerasi under different host environments associated with detoxification genes

2018 ◽  
Author(s):  
Peter Thorpe ◽  
Carmen M. Escudero-Martinez ◽  
Sebastian Eves-van den Akker ◽  
Jorunn I.B. Bos
Keyword(s):  
Host Plant ◽  
Plant Species ◽  
Survival Rates ◽  
Aphid Species ◽  
Life Cycles ◽  
Controlled Environment ◽  
Primary Host ◽  
Important Species ◽  
Host Plant Species ◽  
Host Alternation

AbstractAphids are phloem-feeding insects that cause yield losses to crops globally. These insects feature complex life cycles, which in the case of many agriculturally important species involves the use of primary and secondary host plant species. Whilst host alternation between primary and secondary host can occur in the field depending on host availability and the environment, aphid populations maintained as laboratory stocks generally are kept under conditions that allow asexual reproduction by parthenogenesis on secondary hosts. Here, we used Myzus cerasi (black cherry aphid) to assess aphid transcriptional differences between populations collected from primary hosts in the field and those adapted to secondary hosts under controlled environment conditions. Adaptation experiments of M. cerasi collected from local cherry tress to reported secondary host species resulted in low survival rates. Moreover, aphids were unable to survive on secondary host Land cress, unless first adapted to another secondary host, cleavers. Transcriptome analyses of populations collected from primary host cherry in the field and the two secondary host plant species in a controlled environment showed extensive transcriptional plasticity to a change in host environment, with predominantly genes involved in redox reactions differentially regulated. Most of the differentially expressed genes across the M. cerasi populations from the different host environments were duplicated and we found evidence for differential exon usage. In contrast, we observed only limited transcriptional to a change in secondary host plant species.

Modeling the Influence of Genetic and Environmental Variation on the Expression of Plant Life Cycles across Landscapes

2015 ◽  
Vol 185 (2) ◽  
pp. 212-227 ◽  
Author(s):  
Liana T. Burghardt ◽  
C. Jessica E. Metcalf ◽  
Amity M. Wilczek ◽  
Johanna Schmitt ◽  
Kathleen Donohue
Keyword(s):  
Environmental Variation ◽  
Life Cycles ◽  
Plant Life

scholarly journals Modeling Global and Regional Net Primary Production under Elevated Atmospheric CO2: On a Potential Source of Uncertainty

2006 ◽  
Vol 10 (2) ◽  
pp. 1-20 ◽  
Author(s):  
Mustapha El Maayar ◽  
Navin Ramankutty ◽  
Christopher J. Kucharik
Keyword(s):  
Primary Production ◽  
Plant Species ◽  
Elevated Co2 ◽  
Net Primary Production ◽  
Atmospheric Co2 ◽  
C3 Plants ◽  
Field Observations ◽  
Ecosystem Models ◽  
Elevated Atmospheric Co2 ◽  
Photosynthetic Downregulation

Abstract Terrestrial ecosystem models are built, among several reasons, to explore how the Earth’s biosphere responds to climate change and to the projected continual increase of atmospheric CO2 concentration. Many of these models adopt the Farquhar et al. approach, in which leaf carbon assimilation of C3 plants is regulated by two limitations depending on the rate of Rubisco activity and ribulose-1, 5-bisphosphate regeneration (RuBP). This approach was expanded upon by others to include a third limitation that expresses the occurrence, in some plant species, of a photosynthetic downregulation under high concentrations of ambient CO2. Several ecosystem models, however, constrain leaf photosynthesis using only two limitations according to the original formulation of Farquhar et al. and thus neglect the limitation that represents the downregulation of photosynthesis under elevated atmospheric CO2. In this study, the authors first reviewed the effect of elevated CO2 on photosynthesis of C3 plants, which illustrated that short-term observations are likely to considerably underestimate the number of plant species that exhibit a photosynthetic downregulation. Several recent long-term field observations have shown that such downregulation starts to be effective only after several seasons/years of plant exposure to elevated CO2. Second, an ecosystem model was used to illustrate that neglecting the photosynthetic downregulation may significantly bias predictions of net primary production of the middle and high latitudes under high atmospheric CO2 concentrations. Based on both review of field observations and results of simulations, the authors conclude that a more appropriate representation of plant physiology and choice of plant functional types may be required in ecosystem models in order to accurately simulate plant responses to changing environmental conditions.

MODIFICATIONS IN THE CALLING BEHAVIOUR OF PSEUDALETIA VNIPUNCTA (LEPIDOPTERA: NOCTUIDAE), INDUCED BY TEMPERATURE CONDITIONS DURING PUPAL AND ADULT DEVELOPMENT

1983 ◽  
Vol 115 (8) ◽  
pp. 1015-1022 ◽  
Author(s):  
Jean J. Turgeon ◽  
Jeremy N. McNeil
Keyword(s):  
Adult Development ◽  
Field Experiments ◽  
Species Differences ◽  
Adult Life ◽  
Onset Time ◽  
Life Cycles ◽  
Field Observations ◽  
Pupal Development ◽  
Calling Behaviour ◽  
Lepidoptera Noctuidae

AbstractThe age at which Pseudaletia unipuncta females initiated calling varied with temperatures experienced during pupal and adult stages. Entrainment was induced by temperatures during pupal development if similar to or lower than temperatures during adult life. However, adult temperatures were of major importance if lower than those experienced during pupal development. These observations were generally supported by data from field experiments repeated at different periods of the summer. The possibility that entrainment occurs at a specific period of development is proposed to explain certain field observations.Changes in mean onset time of calling and the time spent calling also varied, although generally not in the same manner as reported for other species. Differences in the life cycles, particularly the site of pupation, are proposed to explain these discrepancies.

scholarly journals History and contemporary significance of the Rhynie cherts—our earliest preserved terrestrial ecosystem

2017 ◽  
Vol 373 (1739) ◽  
pp. 20160489 ◽  
Author(s):  
Dianne Edwards ◽  
Paul Kenrick ◽  
Liam Dolan
Keyword(s):  
Terrestrial Ecosystem ◽  
Analytical Techniques ◽  
Land Plant ◽  
Life Cycles ◽  
Systems Science ◽  
Developmental Genetics ◽  
Earth Systems ◽  
Plant Life ◽  
Rhynie Chert ◽  
Tissue Systems

The Rhynie cherts Unit is a 407 million-year old geological site in Scotland that preserves the most ancient known land plant ecosystem, including associated animals, fungi, algae and bacteria. The quality of preservation is astonishing, and the initial description of several plants 100 years ago had a huge impact on botany. Subsequent discoveries provided unparalleled insights into early life on land. These include the earliest records of plant life cycles and fungal symbioses, the nature of soil microorganisms and the diversity of arthropods. Today the Rhynie chert (here including the Rhynie and Windyfield cherts) takes on new relevance, especially in relation to advances in the fields of developmental genetics and Earth systems science. New methods and analytical techniques also contribute to a better understanding of the environment and its organisms. Key discoveries are reviewed, focusing on the geology of the site, the organisms and the palaeoenvironments. The plants and their symbionts are of particular relevance to understanding the early evolution of the plant life cycle and the origins of fundamental organs and tissue systems. The Rhynie chert provides remarkable insights into the structure and interactions of early terrestrial communities, and it has a significant role to play in developing our understanding of their broader impact on Earth systems. This article is part of a discussion meeting issue ‘The Rhynie cherts: our earliest terrestrial ecosystem revisited’.

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