Faculty Opinions recommendation of PEP1 regulates perennial flowering in Arabis alpina.

Many model organisms have obtained a prominent status due to an advantageous combination of their life-history characteristics, genetic properties and also practical considerations. In non-crop plants, Arabidopsis thaliana is the most renowned model and has been used as study system to elucidate numerous biological processes at the molecular level. Once a complete genome sequence was available, research has markedly accelerated and further established A. thaliana as the reference to stimulate studies in other species with different biology. Within the Brassicaceae family, the arctic-alpine perennial Arabis alpina has become a model complementary to A. thaliana to study life-history evolution and ecological genomics in harsh environments. In this review, we provide an overview of the properties that facilitated the rapid emergence of A. alpina as a plant model. We summarize the evolutionary history of A. alpina, including the diversification of its mating system, and discuss recent progress in the molecular dissection of developmental traits that are related to its perennial life history and environmental adaptation. We indicate open questions from which future research might be developed in other Brassicaceae species or more distantly related plant families.

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Multiscale Very-High Resolution Topographic Models in Alpine Ecology: Pros and Cons of Airborne LiDAR and Drone-Based Stereo-Photogrammetry Technologies

10.20944/preprints202103.0581.v1 ◽

2021 ◽

Author(s):

Annie S. Guillaume ◽

Kevin Leempoel ◽

Estelle Rochat ◽

Aude Rogivue ◽

Michel Kasser ◽

...

Keyword(s):

Species Distribution Modelling ◽

Airborne Lidar ◽

Swiss Alps ◽

The Arctic ◽

Site Characteristics ◽

Digital Elevation ◽

Stereo Photogrammetry ◽

Arabis Alpina ◽

Western Swiss Alps ◽

Very High

The vulnerability of alpine environments to climate change presses an urgent need to accurately model and understand these ecosystems. Popularity in use of digital elevation models (DEMs) to derive proxy environmental variables has increased over the past decade, particularly as DEMs are relatively cheaply acquired at very high resolutions (VHR; <1m spatial resolution). Here, we implement a multiscale framework and compare DEM-derived variables produced by Light Detection and Ranging (LiDAR) and stereo-photogrammetry (PHOTO) methods, with the aims of assessing their relevance and utility in species distribution modelling (SDM). Using a case study on the arctic-alpine plant Arabis alpina in two valleys in the western Swiss Alps, we show that both LiDAR and PHOTO technologies can be relevant for producing DEM-derived variables for use in SDMs. We demonstrate that PHOTO DEMs rivalled the accuracy of LiDAR, putting the current paradigm of LiDAR being the more accurate of the two methods into question. We obtained DEMs at spatial resolutions of 6.25cm-8m for PHOTO and 50cm-32m for LiDAR, where we determined that the optimal spatial resolutions of DEM-derived variables in SDM were between 1 and 32m, depending on the variable and site characteristics. We found that the reduced extent of PHOTO DEMs altered the calculations of all derived variables, which had particular consequences on their relevance at the site with heterogenous terrain. However, for the homogenous site, we found that SDMs based on PHOTO-derived variables generally had higher predictive powers than those derived from LiDAR at matching resolutions. From our results, we recommend carefully considering the required DEM extent to produce relevant derived variables. We also advocate implementing a multiscale framework to appropriately assess the ecological relevance of derived variables, where we caution against the use of VHR-DEMs finer than 50cm in such studies.

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Analysis of TTG1 function in Arabis alpina

BMC Plant Biology ◽

10.1186/1471-2229-14-16 ◽

2014 ◽

Vol 14 (1) ◽

pp. 16 ◽

Cited By ~ 12

Author(s):

Divykriti Chopra ◽

Heike Wolff ◽

Johannes Span ◽

Swen Schellmann ◽

George Coupland ◽

...

Keyword(s):

Arabis Alpina

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Occurrence and ultrastructure of Albugo candida on a new host, Arabis alpina in Saudi Arabia

Micron ◽

10.1016/j.micron.2008.06.001 ◽

2008 ◽

Vol 39 (8) ◽

pp. 1138-1144 ◽

Cited By ~ 10

Author(s):

Z.A.M. Baka

Keyword(s):

Saudi Arabia ◽

New Host ◽

Albugo Candida ◽

Arabis Alpina

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Thecaphora thlaspeos. [Descriptions of Fungi and Bacteria].

IMI Descriptions of Fungi and Bacteria ◽

10.1079/dfb/20083307033 ◽

2008 ◽

Author(s):

C. M. Denchev

Keyword(s):

South Korea ◽

Geographical Distribution ◽

Conservation Status ◽

Thlaspi Caerulescens ◽

Arabis Alpina ◽

Arabis Serrata

Abstract A description is provided for Thecaphora thlaspeos, which destroys seeds of Brassicaceae. Some information on its dispersal and transmission and conservation status is given, along with details of its geographical distribution (South Korea, Austria, Bulgaria, Finland, Germany, Hungary, Italy, Norway, Romania, Slovakia, Sweden and Switzerland) and hosts (Alyssum reiseri, Arabis alpina, Arabis corymbiflora, Arabis hirsuta, Arabis sagittata, Arabis serrata var. hallaisanensis, Cardamine bellidifolia, Cardaminopsis petraea (Arabis petraea), Draba aizoides, Draba alpina, Draba incana, Erysimum diffusum, Erysimum weltschevii, Thlaspi alpestre, Thlaspi alpinum, Thlaspi brachypetalum (Thlaspi caerulescens subsp. brachypetalum) and Thlaspi caerulescens).

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