Results 71 to 80 of about 15,792 (223)

Effect of auxin (iaa) upon the proteolytic system in differentiating secondary xylem of pine (Pinus sylvestris L.)

Acta Societatis Botanicorum Poloniae, 2014
Effects of decapitation and IAA on proteolytic activity were studied in main stem of 4-7 year-old Pinus sylvestris trees. Proteolytic activity in the extract from differentiating secondary xylem was found to be totally reduced in decapitated 2-3 year-old
Krzysztof J. Rakowski, Tomasz J. Wodzicki   +1 more
doaj   +1 more source

Temperature interacts with jack pine host defences to influence the growth of mountain pine beetle‐associated fungi

Agricultural and Forest Entomology, EarlyView.
Optimal growing temperatures varied with mountain pine beetle‐associated fungal species. There was only a marginal impact of temperature on the response of fungi to defensive monoterpenes of novel host pine. Interspecific facilitation occurred for Leptiographuim longiclavatum when grown in Ophiostoma montium‐induced treatments at optimal temperatures ...
Adrienne C. Bailey, Jennifer G. Klutsch, Kaitlyn Carey, Laureen F. I. Echiverri, Leah Flaherty   +4 more
wiley   +1 more source

Identification of the RNA m5C methyltransferase genes in Populus alba × Populus glandulosa and the role of PagTRM4B in wood formation

Forestry Research
N5-methylcytosine (m5C) RNA methylation plays an essential role in gene regulation, yet its functions in woody plant development remain poorly understood. This study systematically identified 12 putative tRNA-specific methyltransferase 4 (TRM4) homologs (
Jiahuan Chen, Guoning Qi, Minyi Zhong, Zhenghao Geng, Jingran Chen, Jie Zhao, Mingjia Chen, Xiaojing Yan   +7 more
doaj   +1 more source

Environmental drivers influencing the ambrosia beetle community: The primary role of geographic and climatic drivers in chestnut‐growing areas

Agricultural and Forest Entomology, EarlyView.
Ethanol‐baited traps were placed in cultivated chestnut orchards (a) and mixed environments with assorted tree composition (b), over a 2‐year monitoring period in two valleys (NW Italy). A total of 118,286 ambrosia beetles was collected, representing six species.
Eleonora Vittoria Fontana, Chiara Ferracini   +1 more
wiley   +1 more source

Comparative transcriptomics reveals seasonal climate-driven secondary xylem development in Pinus massoniana

Industrial Crops and Products
Conifers exhibit marked sensitivity to seasonal variation, demonstrating responsive adaptations to cyclical fluctuations in temperature, photoperiod, and precipitation.
Chao Yang, Gang Xu, Guijie Ding, Chenghang Zhi, Yun Gao, Fuhua Fan   +5 more
doaj   +1 more source

A defensive symbiont and a plant virus confer direct and discrete phenotypes to a cereal aphid in a context‐dependent manner

Ecological Entomology, EarlyView.
Different BYDV‐PAV isolates exert contrasting effects on aphid fitness, including reproduction and winged production. Different BYDV‐PAV isolates have contrasting effects on aphid dispersal patterns. Aphid feeding behaviour is modulated by the presence of endosymbionts and plant viruses.
Daniel J. Leybourne, Andrea Ceribelli, Sharon E. Zytynska   +2 more
wiley   +1 more source

Vertical Stratification Drives Divergent Spatial Trade‐Offs Among Xylem Cell Types in Angiosperm Trees of a Mountain Forest in Eastern China

Ecology and Evolution
Vertical stratification in forests acts as an ecological filter, driving woody plants to evolve specialized survival strategies. Angiosperms, in particular, develop secondary xylem with three interdependent functions—water transport, mechanical support ...
Qihang Yang, Yuxin Hong, Hugh Morris, Faguang Pu, Zuhua Song, Xijin Zhang, Kun Song   +6 more
doaj   +1 more source

Proteolytic activity in the stem cambial region of Pinus sylvestris L. - A contribution to the specific differentiation of secondary xylem and phloem

Acta Societatis Botanicorum Poloniae, 2014
Proteolytic activity was studied in the differentiating xylem and phloem of Scots pine (Pinus sylvestris L.) to determine the specificity of xylem and phloem differentiation.
Krzysztof J. Rakowski, Tomasz J. Wodzicki   +1 more
doaj   +1 more source

Role of the tomato MARS1/ROUGH gene encoding a LYSINE‐SPECIFIC HISTONE DEMETHYLASE 1 in adventitious root and fruit skin formation

Journal of Integrative Plant Biology, EarlyView.
The tomato mars1/rough mutant displays enhanced root regeneration and rough fruits due to ectopic cell proliferation. The causal gene encodes a lysine‐specific histone demethylase that normally maintains gene silencing. Its loss alters histone methylation, upregulating several genes, including those B‐type cyclins involved in tissue‐specific cellular ...
Eduardo Larriba, Cécile Bres, Aurora Alaguero‐Cordovilla, Riyazuddin Riyazuddin, Qingyi Wang, Johann Petit, Jean‐Philippe Mauxion, Lara Caballero, David Latrasse, Bénédicte Bakan, Rim Brik‐Chaouche, David Esteve‐Bruna, Moussa Benhamed, Christophe Rothan, José Manuel Pérez‐Pérez   +14 more
wiley   +1 more source

Auxin-responsive DR5 promoter coupled with transport assays suggest separate but linked routes of auxin transport during woody stem development in Populus.

PLoS ONE, 2013
Polar auxin transport (PAT) is a major determinant of plant morphology and internal anatomy with important roles in vascular patterning, tropic growth responses, apical dominance and phyllotactic arrangement.
Rachel Spicer, Tracy Tisdale-Orr, Christian Talavera   +2 more
doaj   +1 more source