scholarly journals Adaptability variations and differences in photoprotection of young leaves of two tree species of subtropical forest to the light environment

2021 ◽  
Vol 59 (1) ◽  
pp. 116-126
Author(s):  
Z.-C. YU ◽  
Y.-N. LUO ◽  
W.-Y. SHI ◽  
W. LIN ◽  
C.-L. PENG
Keyword(s):  
Tree Species ◽  
Subtropical Forest ◽  
Light Environment ◽  
Young Leaves

scholarly journals Effects of different nitrogen sources on growth, chlorophyll concentration, nitrate reductase activity and carbon and nitrogen distribution in Araucaria angustifolia

2008 ◽  
Vol 20 (4) ◽  
pp. 295-303 ◽  
Author(s):  
Mário L. Garbin ◽  
Lúcia R. Dillenburg
Keyword(s):  
Nitrate Reductase ◽  
Tree Species ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Temperate Climate ◽  
Growth Media ◽  
Araucaria Angustifolia ◽  
Inorganic N ◽  
N Source ◽  
Young Leaves

The southern Brazilian highland plateau is a mosaic of two contrasting plant communities, Araucaria forests and grasslands, which differ in the relative abundances and spatial patterns of soil nitrate and ammonium. However, we still do not know the inorganic N preferences of one key species in this mosaic, Araucaria angustifolia, the dominant tree species in the Araucaria forests and an important tree species invading the adjacent grasslands. Growth responses measured in a greenhouse study demonstrated that the species prefers NH4+ over NO3- as an inorganic N source. When provided alone, NO3- induced N deficiency symptoms: increases in root: shoot ratio, root branching and leaf mass per area, thickening of the shoot apexes and decreased mass-based chlorophyll and N concentrations of the young leaves. Nitrate-based nutrition also affected the whole plant N and carbon (C) distribution: young leaves accumulated less N and showed a larger C:N ratio than mature leaves. The nitrate reductase activity (NRA) followed the pattern of root: shoot partitioning expected for temperate climate conifers (activity concentrated in roots). However, the presence of NRA even under sole NH4+ nutrition indicates that plants may show constitutive levels of the enzyme, or that low levels of NO3- (possibly formed by contamination of the growth media) can induce leaf NRA. We suggest that A. angustifolia has ammonium as a preferential inorganic N source, and that this preference may favor a more successful establishment in grassland than in forest areas.

scholarly journals Tree species co-occurrence patterns change across grains: insights from a subtropical forest

Ecosphere ◽  
2018 ◽  
Vol 9 (5) ◽  
pp. e02213 ◽  
Author(s):  
Avi Bar-Massada ◽  
Qingsong Yang ◽  
Guochun Shen ◽  
Xihua Wang
Keyword(s):  
Tree Species ◽  
Subtropical Forest ◽  
Occurrence Patterns

scholarly journals Response to Comment on “Impacts of species richness on productivity in a large-scale subtropical forest experiment”

Science ◽  
2019 ◽  
Vol 363 (6423) ◽  
pp. eaav9863 ◽  
Author(s):  
Helge Bruelheide ◽  
Yuxin Chen ◽  
Yuanyuan Huang ◽  
Keping Ma ◽  
Pascal A. Niklaus ◽  
...  
Keyword(s):  
Species Richness ◽  
Tree Species ◽  
Large Scale ◽  
Subtropical Forest ◽  
Natural Forests ◽  
Tree Species Richness ◽  
Species Pools

Yang et al. have raised criticism that the results reported by us would not be relevant for natural forests. We argue that productivity is positively related to species richness also in subtropical natural forests, and that both the species pools and the range of tree species richness used in our experiment are representative of many natural forests of this biome.

Different photoprotection strategies for mid- and late-successional dominant tree species in a high-light environment in summer

2020 ◽  
Vol 171 ◽  
pp. 103927 ◽  
Author(s):  
Zheng-Chao Yu ◽  
Xiao-Ting Zheng ◽  
Wei Lin ◽  
Ming-Lin Cai ◽  
Qi-Lei Zhang ◽  
...  
Keyword(s):  
Tree Species ◽  
High Light ◽  
Light Environment
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