Leaf and stem traits variation of <i>Stellera chamaejasme</i> Linn. with slope aspect in alpine steppe

Li, Lili; Zhang, Tingjun; Zhao, Chunzhang; Yu, Li; Li, Yuxing; Mu, Cuicui

doi:10.1111/1440-1703.1007

Cited by 10 publications

(10 citation statements)

References 43 publications

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“…The LS significantly increased in the NFS in our study (Figure 2b ) in accordance with other studies (Ackerly et al., 2002 ; Li et al., 2019 ). Ackerly et al.…”

Section: Discussionsupporting

confidence: 93%

“…The LS significantly increased in the NFS in our study (Figure 2b) in accordance with other studies (Ackerly et al, 2002;Li et al, 2019). Ackerly et al (2002) achieved a significant relationship of LS with irradiance along the slope gradient and suggested that the leaf temperature may be a constraining factor on SFS.…”

Section: Shifts Of Ls Along the South-north Slope Aspect Gradientsupporting

confidence: 92%

“…Slope aspects may influence the leaf trait by both climate and soil factors. Ackerly et al (2002) found higher LMA and smaller LS in the SFS in a forest of the coastal California region, and Li et al (2019) showed that the leaves on NFS at the population level in an alpine steppe were large, but more evidence is still required to delineate the plants in different climate zones or vegetation types. As is well known, incident solar radiation is higher on SFS in the Northern Hemisphere.…”

Section: Introductionmentioning

confidence: 99%

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Shifts and plasticity of plant leaf mass per area and leaf size among slope aspects in a subalpine meadow

Song

Jing

et al. 2021

Ecology and Evolution

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The composition of vegetation on a slope frequently changes substantially owing to the different micro-environments of various slope aspects. To understand how the slope aspect affects the vegetation changes, we examined the variations in leaf mass per area (LMA) and leaf size (LS) within and among populations for 66 species from 14 plots with a variety of slope aspects in a subalpine meadow. LMA is a leaf economic trait that is tightly correlated with plant physiological traits, while the LS shows a tight correlation with leaf temperature, indicating the strategy of plants to selfadjust in different thermal and hydraulic conditions. In this study, we compared the two leaf traits between slope aspects and between functional types and explored their correlation with soil variables and heat load. Our results showed that high-LMA, small-leaved species were favored in south-facing slopes, while the reverse was true in north-facing areas. In detail, small dense-leaved graminoids dominated the south slopes, while large thin-leaved forbs dominated the north slopes. Soil moisture and the availability of soil P were the two most important soil factors that related to both LMA and LS, and heat load also contributed substantially. Moreover, we disentangled the relative importance of intraspecific trait variation and species turnover in the trait variation among plots and found that the intraspecific variation contributed 98% and 56% to LMA and LS variation among communities, respectively, implying a large contribution of intraspecific trait plasticity. These results indicate that LMA and LS are two essential leaf traits that affect the adaptation or acclimation of plants underlying the vegetation composition changes in different slope aspects in the subalpine meadow.

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“…The LS significantly increased in the NFS in our study (Figure 2b ) in accordance with other studies (Ackerly et al., 2002 ; Li et al., 2019 ). Ackerly et al.…”

Section: Discussionsupporting

confidence: 93%

Section: Shifts Of Ls Along the South-north Slope Aspect Gradientsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Shifts and plasticity of plant leaf mass per area and leaf size among slope aspects in a subalpine meadow

Song

Jing

et al. 2021

Ecology and Evolution

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“…In woody communities, especially closed ones, self-shading among leaves reduces the efficiency of light interception by the lamina (Niinemets, 1998;Bell and Galloway, 2007;Roig-Villanova and Martíinez-Garcíia, 2016;Perez et al, 2018). Petiole elongation, at the expense of support, is one of the most obvious changes to diminish self-shading because it can send lamina to a higher position as well as adjust the angle of the lamina on a branch to avoid overlapping with its neighbors (King and Maindonald, 1999;Falster and Westoby, 2003;Bell and Galloway, 2007;Poorter and Rozendaal, 2008;Sarlikioti et al, 2011;Perez et al, 2018;Li et al, 2019;Zhong et al, 2019). The relationship between lamina length (LL) and petiole length (PL) is expected to be positive because of a higher proportion of overlap of longer laminas in a given space, which has been under genetic control (Tsukaya et al, 2002;Tsukaya, 2005).…”

Section: Introductionmentioning

confidence: 99%

Geographic Variation in the Petiole–Lamina Relationship of 325 Eastern Qinghai–Tibetan Woody Species: Analysis in Three Dimensions

Kang

Zhou

et al. 2021

Front. Plant Sci.

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The petiole–lamina relationship is central to the functional tradeoff between photosynthetic efficiency and the support/protection cost. Understanding environmental gradients in the relationship and its underlying mechanisms remains a critical challenge for ecologists. We investigated the possible scaling of the petiole–lamina relationships in three dimensions, i.e., petiole length (PL) vs. lamina length (LL), petiole cross sectional area (PCA) vs. lamina area (LA), and petiole mass (PM) vs. lamina mass (LM), for 325 Qinghai–Tibetan woody species, and examined their relation to leaf form, altitude, climate, and vegetation types. Both crossspecies analysis and meta-analysis showed significantly isometric, negatively allometric, and positively allometric scaling of the petiole–lamina relationships in the length, area, and mass dimensions, respectively, reflecting an equal, slower, and faster variation in the petiole than in the lamina in these trait dimensions. Along altitudinal gradients, the effect size of the petiole–lamina relationship decreased in the length and mass dimensions but increased in the area dimension, suggesting the importance of enhancing leaf light-interception and nutrient transport efficiency in the warm zones in petiole development, but enhancing leaf support/protection in the cold zones. The significant additional influences of LA, LM, and LA were observed on the PL–LL, PCA–LA, and PM–LM relationships, respectively, implying that the single-dimension petiole trait is affected simultaneously by multidimensional lamina traits. Relative to simple-leaved species, the presence of petiolule in compound-leaved species can increase both leaf light interception and static gravity loads or dynamic drag forces on the petiole, leading to lower dependence of PL variation on LL variation, but higher biomass allocation to the petiole. Our study highlights the need for multidimension analyses of the petiole–lamina relationships and illustrates the importance of plant functional tradeoffs and the change in the tradeoffs along environmental gradients in determining the relationships.

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“…Poisonous plant species are more e cient in utilizing N in poor nutrient soil than sedges and grasses, which may have been their survival mechanism in alpine grassland [28]. However, during the spreading of poisonous plants, self-reinforcing is a key driving force in degraded grassland [4,8,36], with the interaction of root exudates and rhizosphere microorganisms a key factor in the process [4,24,37]. We hypothesized that the exudate from roots of poisonous plant species contain more compounds for speci c microorganisms to promote self-growth than non-poisonous plant species.…”

Section: Introductionmentioning

confidence: 99%

Interaction between root exudates and rhizosphere microorganisms facilitates the expansion of poisonous plant species in degraded grassland

Wang

Jia

et al. 2021

Preprint

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Background The interaction between rhizosphere microorganisms and rhizosphere exudates is considered a ‘novel weapon’ for poisonous plants’ colonization, but the relationship between them in facilitating the expansion of poisonous plants in degraded or barren land is poorly understood. We examined this relationship in different degradation levels of alpine grasslands on the Tibetan plateau (3,700 m a.s.l) by determining the composition of root exudates, soil physical and chemical properties, rhizosphere microbial diversity and carbon metabolism of the main poisonous and non-poisonous plant species. Results Soil nutrients, including total organic carbon, total nitrogen and available phosphorous, diversity of microorganisms and microbial carbon metabolism were greater in the rhizosphere of poisonous than in non-poisonous plant species (P < 0.05). The distribution of bacteria and root exudates were plant species specific. Soil microbial communities were affected by habitat and plant species in degraded grassland, and more so for bacteria than fungi. The cell growth and death pathway for the poisonous species Ligularia virgaurea was greater than for other poisonous species (P < 0.05), and the difference increased with an increase in grassland degradation and a decrease in soil nutrients (P < 0.05), which could explain how L. virgaurea became the dominant poisonous species in degraded alpine grassland. The roots of L. virgaurea exudated such compounds as alkaloids, lupinic acid, terpenes, artemisinin, and coumarin, which were correlated positively with different bacteria in different habitats. Conclusion It was concluded that poisonous plant species adapted to degraded grassland through the interaction of root exudates and rhizosphere microorganisms, which facilitated their expansion in degraded alpine grassland.

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Leaf and stem traits variation of Stellera chamaejasme Linn. with slope aspect in alpine steppe

Cited by 10 publications

References 43 publications

Shifts and plasticity of plant leaf mass per area and leaf size among slope aspects in a subalpine meadow

Shifts and plasticity of plant leaf mass per area and leaf size among slope aspects in a subalpine meadow

Geographic Variation in the Petiole–Lamina Relationship of 325 Eastern Qinghai–Tibetan Woody Species: Analysis in Three Dimensions

Interaction between root exudates and rhizosphere microorganisms facilitates the expansion of poisonous plant species in degraded grassland

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