Fine Root Traits across Different Root Orders and Their Associations with Leaf Traits in 15 Co-Occurring Plant Species from the Desert–Oasis Transition Zone in the Hexi Corridor, Gansu Province, China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Site and Species Selection
2.2. Sample Collection
2.3. Plant Trait Measurements
2.4. Data Analysis
3. Results
3.1. Differences in Fine Root Traits among Root Orders
3.2. Trait Linkages between the Fine Roots of Different Orders and Leaves
3.3. Leaf, Root, and Whole Plant Economics Spectrum
3.4. Linkages among Roots, Leaves, and Whole Plant Economics Spectrum of 15 Plant Species
4. Discussion
4.1. Differences and Associations between Fine Root Traits and Leaf Traits in Different Root Orders
4.2. Characterization of the Economics Spectrum of 15 Plant Resources
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Organ | Functional Trait | Functions | Acronym | Unit |
---|---|---|---|---|
Leaf | Leaf dry matter content | Defense | LDMC | mg/g |
Specific leaf area | Resource capture | SLA | cm2/g | |
Leaf tissue density | Defense | LTD | g/cm3 | |
Degree of fleshiness | Defense | DOF | / | |
Leaf carbon concentration | Defense | LCC | mg/g | |
Leaf nitrogen concentration | Resource capture | LNC | mg/g | |
Fine root | Root diameter | Transport, construction, defense | RD | mm |
Specific root length | Resource capture | SRL | cm/g | |
Specific root area | Resource capture | SRA | cm2/g | |
Root tissue density | Transport, construction, defense | RTD | g/cm3 | |
Root carbon concentration | Transport, construction, defense | RCC | mg/g | |
Root nitrogen concentration | Resource capture | RNC | mg/g |
Root Trait | Root Order (RO) | Growth Form (GF) | RO × GF | |||
---|---|---|---|---|---|---|
F | p Value | F | p Value | F | p Value | |
RD | 10.864 | <0.001 | 7.337 | 0.010 | 0.710 | 0.498 |
SRL | 34.548 | <0.001 | 5.523 | 0.024 | 1.777 | 0.183 |
SRA | 95.946 | <0.001 | 12.582 | 0.001 | 2.219 | 0.122 |
RTD | 41.99 | <0.001 | 2.400 | 0.129 | 1.029 | 0.367 |
RCC | 8.128 | 0.001 | 5.232 | 0.028 | 0.016 | 0.984 |
RNC | 7.307 | 0.002 | 0.056 | 0.814 | 0.014 | 0.986 |
Traits | Fine Root | Leaf | Whole-Plant | |||
---|---|---|---|---|---|---|
PC1 | PC2 | PC1 | PC2 | PC1 | PC2 | |
RD | −0.659 ** | 0.434 ** | / | / | −0.698 ** | 0.183 |
SRL | 0.899 ** | 0.367 * | / | / | 0.867 ** | 0.198 |
SRA | 0.920 ** | 0.351 * | / | / | 0.893 ** | 0.196 |
RTD | −0.858 ** | −0.272 | / | / | −0.815 ** | −0.339 * |
RCC | −0.760 ** | 0.364 * | / | / | −0.748 ** | −0.237 |
RNC | 0.702 ** | −0.460 ** | / | / | 0.690 ** | 0.066 |
LDMC | / | / | 0.840 ** | 0.097 | −0.215 | 0.799 ** |
SLA | / | / | −0.889 ** | 0.019 | 0.377 * | −0.815 ** |
LTD | / | / | 0.833 ** | −0.205 | −0.360 * | 0.728 ** |
LCC | / | / | −0.058 | 0.785 ** | 0.123 | 0.094 |
LNC | / | / | 0.224 | 0.681 ** | 0.038 | 0.290 |
Growth Form (GF) | Root Order (RO) | GF × RO | |||||
---|---|---|---|---|---|---|---|
F | p | F | p | F | p | ||
Root traits | PC1 | 15.398 | <0.001 | 95.871 | <0.001 | 0.341 | 0.713 |
PC2 | 0.162 | 0.689 | 0.867 | 0.428 | 0.666 | 0.519 | |
Leaf traits | PC1 | 11.146 | 0.005 | / | / | / | / |
PC2 | 3.209 | 0.097 | / | / | / | / | |
Whole-plant traits | PC1 | 36.552 | <0.001 | 77.035 | <0.001 | 0.248 | 0.782 |
PC2 | 18.473 | <0.001 | 2.604 | 0.087 | 0.049 | 0.952 |
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Chen, Y.; Ma, J.; Wang, H.; Xie, T.; Li, Q.; Shan, L. Fine Root Traits across Different Root Orders and Their Associations with Leaf Traits in 15 Co-Occurring Plant Species from the Desert–Oasis Transition Zone in the Hexi Corridor, Gansu Province, China. Plants 2024, 13, 2472. https://doi.org/10.3390/plants13172472
Chen Y, Ma J, Wang H, Xie T, Li Q, Shan L. Fine Root Traits across Different Root Orders and Their Associations with Leaf Traits in 15 Co-Occurring Plant Species from the Desert–Oasis Transition Zone in the Hexi Corridor, Gansu Province, China. Plants. 2024; 13(17):2472. https://doi.org/10.3390/plants13172472
Chicago/Turabian StyleChen, Yiming, Jing Ma, Hongyong Wang, Tingting Xie, Quangang Li, and Lishan Shan. 2024. "Fine Root Traits across Different Root Orders and Their Associations with Leaf Traits in 15 Co-Occurring Plant Species from the Desert–Oasis Transition Zone in the Hexi Corridor, Gansu Province, China" Plants 13, no. 17: 2472. https://doi.org/10.3390/plants13172472