Alex - Botany One (Page 18)

Patchy radial increment in the mangrove Avicennia

Robert et al. monitor stem variations in A. marina trees in a natural mangrove forest over the course of one year, and find that patchiness occurs in both the radial growth and the shrinkage and swelling patterns of the stems.

Alex

12 Sep 2014

annals-of-botany

Combining FISH and chromosome modelling in Typhonium

Sousa et al. combine cytogenetics, using fluorescent in situ hybridization (FISH), and modelling of changing chromosome numbers in a maximum-likelihood framework to study Typhonium, a genus of Araceae with 2n = 24 and 2n = 8, the lowest known count in the family.

Alex

10 Sep 2014

annals-of-botany

AP1/SEP/AGL6 MADs-box genes in a basal eudicot

Sun et al. study structural and functional variation of FUL-like (AP1 subfamily), SEP-like and AGL6-like genes in the basal eudicot Epimedium sagittatum.

Alex

08 Sep 2014

annals-of-botany

Trends and concepts in fern classification (Invited Review)

Christenhusz and Chase highlight which fern groups/genera have taxonomic issues that remain to be clarified, and propose the use of broader family concepts.

Alex

07 Sep 2014

annals-of-botany

GPT2, seedling development and sugar signalling

Dyson et al. study wild-type A. thaliana and a gpt2 T-DNA insertion knockout line, and find that plants lacking GPT2 expression are delayed in seedling establishment, specifically in the process of cotyledon greening (rather than germination).

Alex

05 Sep 2014

annals-of-botany

Sesquiterpene lactones and herbivore resistance

Ahern and Whitney use common garden experiments with common cocklebur, Xanthium strumarium (Asteraceae), to examine relationships between stereochemical variation in sesquiterpene lactones, herbivore damage and plant fitness.

Alex

03 Sep 2014

annals-of-botany

Pollination by sexual deception in Pterostylis

A single species of male gnat (Mycetophilidae) visits and pollinates the rewardless flowers of P. sanguinea. The gnats often show probing copulatory behaviour on the labellum, leading to its triggering and the temporary entrapment of the gnat in the flower.

Alex

01 Sep 2014

annals-of-botany

Hydraulic integration in tree root vessels

Johnson et al. measure xylem embolism resistance and connectivity in roots of two co-occurring tree species in a semi-arid habitat, Quercus fusiformis and Sideroxylon lanuginosum.

Alex

31 Aug 2014

annals-of-botany

Biomechanical responses of hemlock to herbivory

Soltis et al. study the impact of feeding by hemlock woolly adelgid, Adelges tsugae, on the biomechanics of eastern hemlock trees, Tsuga canadensis.

Alex

24 Aug 2014

annals-of-botany

Density × species evenness effects on coexistence and growth

Collet et al. study a tree plantation that mixes beech and sycamore according to a double gradient of density and species’ proportion, and find that density and tree size are the primary factors determining individual growth and stand productivity.

Alex

23 Aug 2014