scholarly journals Functional implications of root cortical senescence for soil resource capture

2017 ◽  
Vol 423 (1-2) ◽  
pp. 13-26 ◽  
Author(s):  
Hannah M. Schneider ◽  
Jonathan P. Lynch
Keyword(s):  
Soil Resource ◽  
Resource Capture ◽  
Functional Implications

scholarly journals New roots for agriculture: exploiting the root phenome

2012 ◽  
Vol 367 (1595) ◽  
pp. 1598-1604 ◽  
Author(s):  
Jonathan P. Lynch ◽  
Kathleen M. Brown
Keyword(s):  
Root Architecture ◽  
Fitness Landscape ◽  
Root Systems ◽  
Developing Nations ◽  
Soil Resource ◽  
Resource Capture ◽  
Soil Exploration ◽  
New Research ◽  
Training Modalities ◽  
And Training

Recent advances in root biology are making it possible to genetically design root systems with enhanced soil exploration and resource capture. These cultivars would have substantial value for improving food security in developing nations, where yields are limited by drought and low soil fertility, and would enhance the sustainability of intensive agriculture. Many of the phenes controlling soil resource capture are related to root architecture. We propose that a better understanding of the root phenome is needed to effectively translate genetic advances into improved crop cultivars. Elementary, unique root phenes need to be identified. We need to understand the ‘fitness landscape’ for these phenes: how they affect crop performance in an array of environments and phenotypes. Finally, we need to develop methods to measure phene expression rapidly and economically without artefacts. These challenges, especially mapping the fitness landscape, are non-trivial, and may warrant new research and training modalities.

Root anatomy and soil resource capture

2021 ◽  
Author(s):  
Jonathan P. Lynch ◽  
Christopher F. Strock ◽  
Hannah M. Schneider ◽  
Jagdeep Singh Sidhu ◽  
Ishan Ajmera ◽  
...  
Keyword(s):  
Root Anatomy ◽  
Soil Resource ◽  
Resource Capture

Permeability of Endometrial Blood Vessels to Exogenous Horse Radish Peroxidase in Mice. Electron Microscope Study

1973 ◽  
Vol 31 ◽  
pp. 562-563
Author(s):  
M.C. Castillo-Jessen ◽  
A. González-Angulo
Keyword(s):  
Electron Microscopy ◽  
Blood Vessels ◽  
Electron Microscope Study ◽  
Ultrastructural Level ◽  
Low Molecular Weight ◽  
Horse Radish Peroxidase ◽  
Intravascular Injection ◽  
Normal Morphology ◽  
Functional Implications ◽  
Low Molecular Weight Proteins

Information regarding the normal morphology of uterine blood vessels at ultrastructural level in mammals is scarce Electron microscopy studies dealing with endometrial vasculature despite the functional implications due to hormone priming are not available. Light microscopy observations with combined injection of dyes and microradiography along with histochemical studies does not enable us to know the detailed fine structure of the possible various types of blood vessels in this tissue. The present work has been designed to characterize the blood vessels of endometrium of mice as well as the behavior of the endothelium to injection of low molecular weight proteins during the normal estrous cycle in this animal. One hundred and forty female albino mice were sacrificed after intravascular injection of horse radish peroxidase (HRP) at 30 seconds, 5, 15, 30 and 60 minutes.

Intraindividual Variability and Stability of Affect and Well-Being

GeroPsych ◽  
2013 ◽  
Vol 26 (3) ◽  
pp. 185-199 ◽  
Author(s):  
Christina Röcke ◽  
Annette Brose
Keyword(s):  
Age Differences ◽  
Well Being ◽  
Subjective Well Being ◽  
Emotional Experiences ◽  
Short Term ◽  
Regulatory Processes ◽  
Functional Implications ◽  
Methodological Approaches ◽  
Underlying Processes

Whereas subjective well-being remains relatively stable across adulthood, emotional experiences show remarkable short-term variability, with younger and older adults differing in both amount and correlates. Repeatedly assessed affect data captures both the dynamics and stability as well as stabilization that may indicate emotion-regulatory processes. The article reviews (1) research approaches to intraindividual affect variability, (2) functional implications of affect variability, and (3) age differences in affect variability. Based on this review, we discuss how the broader literature on emotional aging can be better integrated with theories and concepts of intraindividual affect variability by using appropriate methodological approaches. Finally, we show how a better understanding of affect variability and its underlying processes could contribute to the long-term stabilization of well-being in old age.

Excavation at Newton, Islay

1988 ◽  
Vol 15 (1) ◽  
pp. 23-51 ◽  
Author(s):  
R McCullagh ◽  
M Andrews ◽  
Anne Clarke ◽  
G Collins ◽  
E Halpin ◽  
...  
Keyword(s):  
Land Use ◽  
Final Phase ◽  
Soil Resource ◽  
Three Phases

Summary Excavations at Newton have revealed three phases of land use. Mesolithic activity was restricted to small flint working and domestic sites. A Neolithic phase appears to relate to a fragile soil resource which rapidly declined in quality. The final phase, possibly related to a Christian Irish presence on the island, occurs late in the sequence.

Do Species Mixtures Increase Above- and Belowground Resource Capture in Woody and Herbaceous Tropical Legumes?

2002 ◽  
Vol 94 (3) ◽  
pp. 518 ◽  
Author(s):  
Stanley M. Gathumbi ◽  
James K. Ndufa ◽  
Ken E. Giller ◽  
Georg Cadisch
Keyword(s):  
Resource Capture ◽  
Tropical Legumes ◽  
Species Mixtures

scholarly journals A comprehensive annotation dataset of intact LTR retrotransposons of 300 plant genomes

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Shan-Shan Zhou ◽  
Xue-Mei Yan ◽  
Kai-Fu Zhang ◽  
Hui Liu ◽  
Jie Xu ◽  
...  
Keyword(s):  
Evolutionary Dynamics ◽  
Age Determination ◽  
Genome Plasticity ◽  
Ltr Retrotransposons ◽  
Functional Variation ◽  
Plant Genomes ◽  
Sequencing Technologies ◽  
Plant Groups ◽  
Functional Implications ◽  
Classification Information

AbstractLTR retrotransposons (LTR-RTs) are ubiquitous and represent the dominant repeat element in plant genomes, playing important roles in functional variation, genome plasticity and evolution. With the advent of new sequencing technologies, a growing number of whole-genome sequences have been made publicly available, making it possible to carry out systematic analyses of LTR-RTs. However, a comprehensive and unified annotation of LTR-RTs in plant groups is still lacking. Here, we constructed a plant intact LTR-RTs dataset, which is designed to classify and annotate intact LTR-RTs with a standardized procedure. The dataset currently comprises a total of 2,593,685 intact LTR-RTs from genomes of 300 plant species representing 93 families of 46 orders. The dataset is accompanied by sequence, diverse structural and functional annotation, age determination and classification information associated with the LTR-RTs. This dataset will contribute valuable resources for investigating the evolutionary dynamics and functional implications of LTR-RTs in plant genomes.

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