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Yao Y, Nan L, Wang K, Xia J, Ma B, Cheng J. Integrative leaf anatomy structure, physiology, and metabolome analyses revealed the response to drought stress in sainfoin at the seedling stage. PHYTOCHEMICAL ANALYSIS : PCA 2024; 35:1174-1185. [PMID: 38553821 DOI: 10.1002/pca.3351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/07/2024] [Accepted: 03/07/2024] [Indexed: 07/03/2024]
Abstract
INTRODUCTION Sainfoin (Onobrychis viciaefolia) is a vital legume forage, and drought is the primary element impeding sainfoin growth. OBJECTIVE The anatomical structure, physiological indexes, and metabolites of the leaves of sainfoin seedlings with a drought-resistant line of P1 (DRL) and a drought-sensitive material of 2049 (DSM) were analyzed under drought (-1.0 MPa) with polyethylene glycol-6000 (PEG-6000). METHODS The leaf anatomy was studied by the paraffin section method. The related physiological indexes were measured by the hydroxylamine oxidation method, titanium sulfate colorimetric method, thiobarbituric acid method, acidic ninhydrin colorimetric method, and Coomassie brilliant blue method. The metabolomics analysis was composed of liquid chromatography tandem high-resolution mass spectrometry (LC-MS/MS). RESULTS The results revealed that the thickness of the epidermis, palisade tissue, and sponge tissue of DRL were significantly greater than those of DSM. The leaves of DRL exhibited lower levels of superoxide anion (O2 •-) production rate, hydrogen peroxide (H2O2) content, and malondialdehyde (MDA) content compared with DSM, while proline (Pro) content and soluble protein (SP) content were significantly higher than those of DSM. A total of 391 differential metabolites were identified in two samples. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment showed that the primary differential metabolites were concentrated into the tyrosine metabolism; isoquinoline alkaloid biosynthesis; ubiquinone and other terpenoid quinone biosynthesis; neomycin, kanamycin, and gentamicin biosynthesis; and anthocyanin biosynthesis metabolic pathways. CONCLUSION Compared with DSM, DRL had more complete anatomical structure, lower active oxygen content, and higher antioxidant level. The results improved our insights into the drought-resistant mechanisms in sainfoin.
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Affiliation(s)
- Yuheng Yao
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou, Gansu, China
| | - Lili Nan
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou, Gansu, China
| | - Kun Wang
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou, Gansu, China
| | - Jing Xia
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou, Gansu, China
| | - Biao Ma
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou, Gansu, China
| | - Jiao Cheng
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou, Gansu, China
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Kang DJ, Tazoe H. Impacts of soil type and drought stress on growth and cesium accumulation in Napier grass. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:235. [PMID: 38849625 DOI: 10.1007/s10653-024-02023-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 05/02/2024] [Indexed: 06/09/2024]
Abstract
In our previous study, the decontamination efficiency of cesium-137 (137Cs) by Napier grass (Pennisetum purpureum Schum.) in the field was shown to be variable and often influenced by natural environmental factors. To elucidate the factors influencing this variable 137Cs-decontamination efficiency, we investigated the influences of soil type and drought stress on Cs accumulation using cesium-133 (133Cs) in Napier grass grown in plastic containers. The experiment was performed using two soil types (Soil A and B) and three different soil moisture conditions: well-watered control (CL), slight drought stress (SD), and moderate drought stress (MD). Overall, our results indicate that soil type and drought have a significant impact on plant growth and 133Cs accumulation in Napier grass. Plant height (PH), tiller number (TN), leaf width (Wleaf), and dry matter weight of aboveground parts (DWabove) and root parts (DWroot) in Soil B were greater than those in Soil A. Drought stress negatively affected chlorophyll fluorescence parameters (maximal quantum efficiency of photosystem (PS) II photochemistry and potential activity of PS II), PH, TN, Wleaf, DWabove, DWroot, and total 133Cs content (TCs), but it had a positive effect on 133Cs concentration. The 133Cs concentration in the aboveground parts (Csabove) was increased by MD approximately 1.62-fold in Soil A and 1.11-fold in Soil B compared to each CL counterpart. The TCs in the aboveground parts (TCsabove) decreased due to drought by approximately 19.9%-39.0% in Soil A and 49.9%-62.7% in Soil B; however, there was no significant effect on TCsabove due to soil type. The results of this study indicate that soil moisture is a key factor in maintaining Napier grass 137Cs-decontamination efficiency.
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Affiliation(s)
- Dong-Jin Kang
- Teaching and Research Center for Bio-coexistence, Faculty of Agriculture and Life Science, Hirosaki University, Gosyogawara, 037-0202, Japan.
| | - Hirofumi Tazoe
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, 036-8564, Japan
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Yuan P, Shen W, Yang L, Tang J, He K, Xu H, Bu F. Physiological and transcriptional analyses reveal the resistance mechanisms of kiwifruit (Actinidia chinensis) mutant with enhanced heat tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108331. [PMID: 38181641 DOI: 10.1016/j.plaphy.2023.108331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/11/2023] [Accepted: 12/31/2023] [Indexed: 01/07/2024]
Abstract
High temperature is an environmental stressor that severely threatens plant growth, development, and yield. In this study, we obtained a kiwifruit mutant (MT) of 'Hongyang' (WT) through 60Co-γ irradiation. The MT possessed different leaf morphology and displayed prominently elevated heat tolerance compared to the WT genotype. When exposure to heat stress, the MT plants exhibited stabler photosynthetic capacity and accumulated less reactive oxygen species, along with enhanced antioxidant capacity and higher expression levels of related genes in comparison with the WT plants. Moreover, global transcriptome profiling indicated that an induction in genes related to stress-responsive, phytohormone signaling, and transcriptional regulatory pathways, which might contribute to the upgrade of thermotolerance in the MT genotype. Collectively, the significantly enhanced thermotolerance of MT might be mainly attributed to profitable leaf structure variations, improved photosynthetic and antioxidant capacities, as well as extensive transcriptome reprogram. These findings would be insightful in elucidating the sophisticated mechanisms of kiwifruit response to heat stress, and suggest the MT holds great potential for future kiwifruit improvement with enhanced heat tolerance.
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Affiliation(s)
- Ping Yuan
- Hunan Horticulture Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan Province, China
| | - Wanqi Shen
- Hunan Horticulture Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan Province, China
| | - Liying Yang
- Hunan Horticulture Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan Province, China
| | - Jiale Tang
- Hunan Horticulture Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan Province, China
| | - Kejia He
- Hunan Horticulture Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan Province, China
| | - Hai Xu
- Hunan Horticulture Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan Province, China.
| | - Fanwen Bu
- Hunan Horticulture Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, Hunan Province, China.
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Cui Z, Huang H, Du T, Chen J, Huang S, Dai Q. Integrated transcriptome and metabolome revealed the drought responsive metabolic pathways in Oriental Lily (Lilium L.). PeerJ 2023; 11:e16658. [PMID: 38130923 PMCID: PMC10734436 DOI: 10.7717/peerj.16658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 11/21/2023] [Indexed: 12/23/2023] Open
Abstract
Objective Lily is an essential ornamental flowering species worldwide. Drought stress is a major constraint affecting the morphology and physiology and lily leaves and flowers. Therefore, understanding the molecular mechanism underlying lily response to drought stress is important. Method Transcriptome and metabolome analysis were performed on Oriental Lily subjected to drought stress. Result Most transcription factors and metabolites yielded by the conjoint analysis displayed a downregulated expression pattern. Differential genes and metabolites mainly co-enriched in glycolic pathways related to sugars, such as galactose, and sucrose, glycolysis and gluconeogenesis, indicating that drought stress reduced the sugar metabolism level of Oriental Lily. Combined with transcriptome and metabolome data, nine pairs of differentially expressed metabolites and the genes (p < 0.05) were obtained. Interestingly, a gene named TRINITY_DN2608 (encoding a type of alpha-D-glucose) cloned and its overexpression lines in Arabidopsis thaliana was generated. Overexpression of TRINITY_DN2608 gene elevated the susceptibility to drought stress possibly by suppressing the glucose level. Conclusion The enrichment of sugar-related pathways advocates the potential role of glucose metabolism in drought stress. Our study provides theoretical information related to the glucose-mediated drought response and would be fruitful in future lily breeding programs.
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Affiliation(s)
- Zhenkui Cui
- Department of Landscape Architecture, Fujian Forestry Vocational & Technical College, Nanping, Fujian, China
| | - Huaming Huang
- Department of Landscape Architecture, Fujian Forestry Vocational & Technical College, Nanping, Fujian, China
| | - Tianqing Du
- College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Jianfeng Chen
- Department of Landscape Architecture, Fujian Forestry Vocational & Technical College, Nanping, Fujian, China
| | - Shuyan Huang
- Department of Landscape Architecture, Fujian Forestry Vocational & Technical College, Nanping, Fujian, China
| | - Qushun Dai
- Department of Landscape Architecture, Fujian Forestry Vocational & Technical College, Nanping, Fujian, China
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Dai H, Yang J, Teng L, Wang Z, Liang T, Khan WA, Yang R, Qiao B, Zhang Y, Yang C. Mechanistic basis for mitigating drought tolerance by selenium application in tobacco ( Nicotiana tabacum L.): a multi-omics approach. FRONTIERS IN PLANT SCIENCE 2023; 14:1255682. [PMID: 37799555 PMCID: PMC10548829 DOI: 10.3389/fpls.2023.1255682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 09/04/2023] [Indexed: 10/07/2023]
Abstract
The lack of irrigation water in agricultural soils poses a significant constraint on global crop production. In-depth investigation into microRNAs (miRNAs) has been widely used to achieve a comprehensive understanding of plant defense mechanisms. However, there is limited knowledge on the association of miRNAs with drought tolerance in cigar tobacco. In this study, a hydroponic experiment was carried out to identify changes in plant physiological characteristics, miRNA expression and metabolite profile under drought stress, and examine the mitigating effects of selenium (Se) application. The shoot dry weight of drought-stressed plants was approximately half (50.3%) of that in non-stressed (control) conditions. However, plants supplied with Se attained 38.8% greater shoot dry weight as compared to plants with no Se supply under drought stress. Thirteen miRNAs were identified to be associated with drought tolerance. These included 7 known (such as nta-miR156b and nta-miR166a) and 6 novel miRNAs (such as novel-nta-miR156-5p and novel-nta-miR209-5p) with the target genes of squamosa promoter-binding-like protein 4 (SPL4), serine/threonine protein phosphatase 2A (PPP2A), cation/calcium exchanger 4-like (CCX4), extensin-1-like (EXT1) and reduced wall acetylation 2 (RWA2). Further investigation revealed that the expression levels of Ext1 and RWA2 were significantly decreased under drought stress but increased with Se addition. Moreover, key metabolites such as catechin and N-acetylneuraminic acid were identified, which may play a role in the regulation of drought tolerance. The integrated analysis of miRNA sequencing and metabolome highlighted the significance of the novel-nta-miR97-5p- LRR-RLK- catechin pathway in regulating drought tolerance. Our findings provide valuable insights into the molecular mechanisms underlying drought tolerance and Se-induced stress alleviation in cigar tobacco.
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Affiliation(s)
- Huaxin Dai
- Department of Tobacco Agriculture, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Jinpeng Yang
- Department of Research Center on Tobacco Cultivating and Curing, Tobacco Research Institute of Hubei, Wuhan, China
| | - Lidong Teng
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Zhong Wang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Taibo Liang
- Department of Tobacco Agriculture, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Waleed Amjad Khan
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, Australia
| | - Ruiwei Yang
- Department of Research Center on Tobacco Cultivating and Curing, Tobacco Research Institute of Hubei, Wuhan, China
| | - Baoming Qiao
- Department of Research Center on Tobacco Cultivating and Curing, Tobacco Research Institute of Hubei, Wuhan, China
| | - Yanling Zhang
- Department of Tobacco Agriculture, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Chunlei Yang
- Department of Research Center on Tobacco Cultivating and Curing, Tobacco Research Institute of Hubei, Wuhan, China
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Jiang S, Tang Y, Fan R, Bai S, Wang X, Huang Y, Li W, Ji W. Response of Carex breviculmis to phosphorus deficiency and drought stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1203924. [PMID: 37496859 PMCID: PMC10366378 DOI: 10.3389/fpls.2023.1203924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 06/26/2023] [Indexed: 07/28/2023]
Abstract
Introduction The drought and phosphorus deficiency have inevitably become environmental issues globally in the future. The analysis of plants functional trait variation and response strategies under the stress of phosphorus deficiency and drought is important to explore their ability to respond to potential ecological stress. Methods In this study, Carex breviculmis was selected as the research object, and a 14-week pot experiment was conducted in a greenhouse, with two phosphorus treatment (add 0.5mmol/L or 0.05μmol/L phosphorus) and four drought treatment (add 0-5%PEG6000), totaling eight treatments. Biomass allocation characteristics, leaf anatomical characteristics, biochemical parameters, root morphology, chemical element content, and photosynthetic parameters were measured. Results The results showed that the anatomical characteristics, chemical elements, and photosynthetic parameters of Carex breviculmis responded more significantly to main effect of phosphorus deficiency. Stomatal width, leaf phosphorus content and maximum net photosynthetic rate decreased by 11.38%, 59.39%, 38.18% significantly (p<0.05), while the change in biomass was not significant (p>0.05). Biomass allocation characteristics and root morphology responded more significantly to main effect of drought. Severe drought significantly decreased leaf fresh weight by 61% and increased root shoot ratio by 223.3% compared to the control group (p<0.05). The combined effect of severe drought and phosphorus deficiency produced the highest leaf N/P ratio (291.1% of the control) and MDA concentration (243.6% of the control). Correlation analysis and redundancy analysis showed that the contributions of phosphorus and drought to functional trait variation were similar. Lower epidermal cell thickness was positively correlated with maximum net photosynthetic rate, leaf phosphorus, chlorophyll ab, and leaf fresh weight (p<0.05). Discussion In terms of response strategy, Carex breviculmis was affected at the microscopic level under phosphorus deficiency stress, but could maintain the aboveground and underground biomass well through a series of mechanisms. When affected by drought, it adopted the strategy of reducing leaf yield and improving root efficiency to maintain life activities. Carex breviculmis could maintain its traits well under low phosphorus and moderate drought, or better conditions. So it may have good ecological service potential in corresponding areas if promoted. This study also provided a reference for plant response to combined drought and phosphorus deficiency stresses.
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Affiliation(s)
- Songlin Jiang
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Yiqing Tang
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Rong Fan
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Shidong Bai
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Xiaoqi Wang
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Yulin Huang
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Weizhong Li
- College of Forestry, Northwest A&F University, Yangling, China
| | - Wenli Ji
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
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Guo PR, Wu LL, Wang Y, Liu D, Li JA. Effects of Drought Stress on the Morphological Structure and Flower Organ Physiological Characteristics of Camellia oleifera Flower Buds. PLANTS (BASEL, SWITZERLAND) 2023; 12:2585. [PMID: 37447146 DOI: 10.3390/plants12132585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/27/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023]
Abstract
Investigations on the impact of drought stress on the reproductive growth of C. oleifera have been relatively limited compared to the extensive research conducted on its nutritional growth. To study the effects of drought stress on the growth and development of C. oleifera flower buds, we investigated the effects of drought stress on the bud anatomical structure, relative water content, relative electrical conductivity, antioxidant enzyme activity, osmoregulation substance content, and hormone contents of C. oleifera using 4-year-old potted plants ('Huaxin' cultivar) as experimental materials. We observed C. oleifera flower bud shrinkage, faded pollen colour, shortened style length, decreased relative water content, increased relative electrical conductivity, and decreased pollen germination rate under drought stress. As the stress treatment duration increased, the malondialdehyde (MDA), soluble sugar (SS), soluble protein (SP), and proline (Pro) contents, as well as peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT) activities increased. Moreover, the levels of the plant hormones indole acetic acid (IAA) and cytokinin (CTK) increased, whereas those of salicylic acid (SA) and jasmonic acid (JA) decreased, and those of abscisic acid (ABA) and gibberellin a3 (GA3) first increased and then decreased. Compared to the control group, the drought treatment group exhibited stronger antioxidant capacity, water regulation ability, and drought stress protection. These results indicate that C. oleifera is adaptable to drought-prone environments. The results of this study provide a theoretical basis for the evaluation of drought resistance in C. oleifera, as well as the development of water management strategies for cultivation.
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Affiliation(s)
- Pu-Rui Guo
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China
- Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha 410004, China
- Engineering Technology Research Center, Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha 410004, China
- Camellia Oil Tree Research Institute, Central South University of Forestry and Technology, Changsha 410004, China
- The Belt and Road International Union Research Center, Tropical Arid Non-wood Forest in Hunan Province, Changsha 410004, China
| | - Ling-Li Wu
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China
- Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha 410004, China
- Engineering Technology Research Center, Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha 410004, China
- Camellia Oil Tree Research Institute, Central South University of Forestry and Technology, Changsha 410004, China
- The Belt and Road International Union Research Center, Tropical Arid Non-wood Forest in Hunan Province, Changsha 410004, China
| | - Ying Wang
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China
- Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha 410004, China
- Engineering Technology Research Center, Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha 410004, China
- Camellia Oil Tree Research Institute, Central South University of Forestry and Technology, Changsha 410004, China
- The Belt and Road International Union Research Center, Tropical Arid Non-wood Forest in Hunan Province, Changsha 410004, China
| | - Dan Liu
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China
- Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha 410004, China
- Engineering Technology Research Center, Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha 410004, China
- Camellia Oil Tree Research Institute, Central South University of Forestry and Technology, Changsha 410004, China
- The Belt and Road International Union Research Center, Tropical Arid Non-wood Forest in Hunan Province, Changsha 410004, China
| | - Jian-An Li
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China
- Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha 410004, China
- Engineering Technology Research Center, Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha 410004, China
- Camellia Oil Tree Research Institute, Central South University of Forestry and Technology, Changsha 410004, China
- The Belt and Road International Union Research Center, Tropical Arid Non-wood Forest in Hunan Province, Changsha 410004, China
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Tang S, Lin X, Li W, Guo C, Han J, Yu L. Nutrient resorption responses of female and male Populus cathayana to drought and shade stress. PHYSIOLOGIA PLANTARUM 2023; 175:e13980. [PMID: 37616009 DOI: 10.1111/ppl.13980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/03/2023] [Accepted: 07/14/2023] [Indexed: 08/25/2023]
Abstract
Nutrient resorption can increase nutrient use and play important roles in terrestrial plant nutrient cycles. Although several studies have reported individual responses of plant nutrient resorption to drought or shade stress, the interaction of drought and shade remains unclear, especially for dioecious plants. This study explored whether nutrient resorption is correlated to growth characteristics (such as biomass and root/shoot ratio [R/S ratio]) and leaf economics (such as leaf thickness, leaf mass per area [LMA] and leaf vein density [LVD]) in female and male Populus cathayana across different conditions. We found that drought stress significantly increased nitrogen (N) resorption efficiency (NRE) in both sexes, but shade and interactive stress decreased NRE in P. cathayana females. Under drought stress, nutrient resorption was sexually dimorphic such that P. cathayana males have higher NRE than females. Furthermore, NRE and phosphorous (P) resorption efficiency (PRE) were positively related to R/S ratio, leaf thickness, LMA, and LVD in both sexes across different treatments. Our study is the first to present how nutrient resorption is related to biomass accumulation and allocation, and leaf economics, suggesting that nutrient uptake may be modulated by R/S ratio and leaf economics, which is important for understanding the conservation mechanism of plant nutrients.
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Affiliation(s)
- Shuanglei Tang
- Department of Ecology, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Xiazhen Lin
- Teaching Center, Zhejiang Open University, Hangzhou, China
| | - Wen Li
- Department of Ecology, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Chengjin Guo
- Department of Ecology, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Jungang Han
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University, Wuhan, China
- Department of Central Laboratory, Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Lei Yu
- Department of Ecology, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
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