scholarly journals Functional relationships between leaf hydraulics and leaf economic traits in response to nutrient addition in subtropical tree species

2013 ◽  
Vol 33 (12) ◽  
pp. 1308-1318 ◽  
Author(s):  
M. Villagra ◽  
P. I. Campanello ◽  
S. J. Bucci ◽  
G. Goldstein
2016 ◽  
Vol 43 (11) ◽  
pp. 1082 ◽  
Author(s):  
Ying Jin ◽  
Chuankuan Wang ◽  
Zhenghu Zhou ◽  
Zhimin Li

Exploring relationships between leaf hydraulics and economic traits is important in understanding the carbon–water coupling and in extending the leaf economics spectrum. In this study, leaf hydraulics, photosynthesis, structural and nutrient traits and photosynthetic resource use efficiency were measured for 10 temperate tree species in the north-eastern China. Leaf hydraulic conductance was positively correlated with photosynthetic traits, specific leaf area, leaf nitrogen concentration, photosynthetic water and nitrogen use efficiencies, suggesting co-ordination between leaf hydraulics and economic traits. Principal component analysis revealed that significant correlations existed among leaf hydraulic, photosynthetic and resource use traits (axis 1), and axis 2 was strongly associated with leaf structural and nutrient traits. The 10 species were distributed along the diagonal line between axis 1 and axis 2. Species displaying the ‘fast’ strategy tended to have higher photosynthetic rates, leaf hydraulic conductance and photosynthetic water and nutrient use efficiencies; however, they also had lower carbon investment and faced a greater risk of embolism. These findings indicate that leaf hydraulics, economics and resource uses together play an important role in determining species ecological strategies, and provide supports for the ‘fast–slow’ leaf economics spectrum.


2020 ◽  
Vol 26 (12) ◽  
pp. 7144-7157
Author(s):  
Ting Wu ◽  
David T. Tissue ◽  
Xu Li ◽  
Shizhong Liu ◽  
Guowei Chu ◽  
...  

2020 ◽  
Author(s):  
Kunasekaran Rajarajan ◽  
◽  
Alka Bharati ◽  
Hirdayesh Anuragi ◽  
Arun Kumar Handa ◽  
...  

Tree species are characterized by their perennial growth habit, woody morphology, long juvenile period phase, mostly outcrossing behaviour, highly heterozygosity genetic makeup, and relatively high genetic diversity. The economically important trees have been an integral part of the human life system due to their provision of timber, fruit, fodder, and medicinal and/or health benefits. Despite its widespread application in agriculture, industrial and medicinal values, the molecular aspects of key economic traits of many tree species remain largely unexplored. Over the past two decades, research on forest tree genomics has generally lagged behind that of other agronomic crops. Genomic research on trees is motivated by the need to support genetic improvement programmes mostly for food trees and timber, and develop diagnostic tools to assist in recommendation for optimum conservation, restoration and management of natural populations. Research on long-lived woody perennials is extending our molecular knowledge and understanding of complex life histories and adaptations to the environment, enriching a field that has traditionally drawn its biological inference from a few short-lived herbaceous species. These concerns have fostered research aimed at deciphering the genomic basis of complex traits that are related to the adaptive value of trees. This review summarizes the highlights of tree genomics and offers some priorities for accelerating progress in the next decade.


Oecologia ◽  
2007 ◽  
Vol 155 (3) ◽  
pp. 405-415 ◽  
Author(s):  
Guang-You Hao ◽  
William A. Hoffmann ◽  
Fabian G. Scholz ◽  
Sandra J. Bucci ◽  
Frederick C. Meinzer ◽  
...  

Author(s):  
Julian P. Heath ◽  
Buford L. Nichols ◽  
László G. Kömüves

The newborn pig intestine is adapted for the rapid and efficient absorption of nutrients from colostrum. In enterocytes, colostral proteins are taken up into an apical endocytotic complex of channels that transports them to target organelles or to the basal surface for release into the circulation. The apical endocytotic complex of tubules and vesicles clearly is a major intersection in the routes taken by vesicles trafficking to and from the Golgi, lysosomes, and the apical and basolateral cell surfaces.Jejunal tissues were taken from piglets suckled for up to 6 hours and prepared for electron microscopy and immunocytochemistry as previously described.


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