Lihua Zhang, Lizhi Jia, Liyuan He, David A Lipson, Yihui Wang, Shunzhong Wang, Xiaofeng Xu
Abstract The theory of microbial stoichiometry predicts proportional coupling of microbial assimilation of carbon (C), nitrogen (N), and phosphorus (P), which is quantified as the homeostasis value (H). Covariation of H values for C, N, and P indicates that microbial C, N, and P assimilation are coupled. Here, we used a global dataset to investigate the spatiotemporal dynamics of H values of microbial C, N, and P across biomes. We found that land-use and management led to the decoupling of P from C and N metabolism over time and across space. We used structural equation modeling (SEM) to show that edaphic factors dominate the microbial homeostasis of P, while soil elemental concentrations dominate the homeostasis of C and N. We confirmed this result using the contrasting factors on microbial P vs. microbial C and N derived from a machine-learning algorithm. Overall, our study highlights the impacts of management on shifting microbial roles in nutrient cycling.
{"title":"Homeostatic evidence of management-induced phosphorus decoupling from soil microbial carbon and nitrogen metabolism","authors":"Lihua Zhang, Lizhi Jia, Liyuan He, David A Lipson, Yihui Wang, Shunzhong Wang, Xiaofeng Xu","doi":"10.1093/jpe/rtad035","DOIUrl":"https://doi.org/10.1093/jpe/rtad035","url":null,"abstract":"Abstract The theory of microbial stoichiometry predicts proportional coupling of microbial assimilation of carbon (C), nitrogen (N), and phosphorus (P), which is quantified as the homeostasis value (H). Covariation of H values for C, N, and P indicates that microbial C, N, and P assimilation are coupled. Here, we used a global dataset to investigate the spatiotemporal dynamics of H values of microbial C, N, and P across biomes. We found that land-use and management led to the decoupling of P from C and N metabolism over time and across space. We used structural equation modeling (SEM) to show that edaphic factors dominate the microbial homeostasis of P, while soil elemental concentrations dominate the homeostasis of C and N. We confirmed this result using the contrasting factors on microbial P vs. microbial C and N derived from a machine-learning algorithm. Overall, our study highlights the impacts of management on shifting microbial roles in nutrient cycling.","PeriodicalId":50085,"journal":{"name":"Journal of Plant Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136233357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Studies of selected habitat conditions, as well as spatio-temporal variability of the number and selected traits of individuals of the species Arum alpinum Schott & Kotschy were carried out in 2020-2021 in the foothills of the Western Carpathians. The investigations were conducted in permanent patches located in the Golesz nature reserve (Patch I), near the village of Markowce (Patch II), in the Kozigarb nature reserve (Patch III), and near the village of Żółków (Patch IV). Patch I and Patch III were established in a Tilio cordatae-Carpinetum betuli oak-hornbeam forest with undergrowth dominated by low-growth vegetation with narrow leaves, whereas Patch II and Patch IV were established in a Populetum albae riparian forest with undergrowth dominated by broad-leaved species. The most abundant population of Arum alpinum was noted in Patch I, but substantial numbers of both vegetative and reproductive individuals were also present in Patches II and IV. The occurrence of temporal variability of individual traits increased from its lowest level in Patch IV, through Patches I and II, to its highest level in Patch III. The significant positive correlation noted in all populations between length of petioles and blade dimensions, as well as between length of generative stems and infructescence traits confirmed previous findings. The conducted research showed that Arum alpinum is not closely affiliated with a specific forest community. Significant shading and moist nutrient-rich soils are suitable for this species, while dry soils and excessive insolation might limit the flowering and fruiting of individuals.
{"title":"The influence of habitat conditions on abundance and selected individual traits of <i>Arum alpinum</i> Schott & Kotschy in the communities <i>Populetum albae</i> and <i>Tilio cordatae-Carpinetum betuli</i> (Western Carpathians)","authors":"Tomasz Wójcik, Kinga Kostrakiewicz-Gierałt","doi":"10.1093/jpe/rtad034","DOIUrl":"https://doi.org/10.1093/jpe/rtad034","url":null,"abstract":"Abstract Studies of selected habitat conditions, as well as spatio-temporal variability of the number and selected traits of individuals of the species Arum alpinum Schott & Kotschy were carried out in 2020-2021 in the foothills of the Western Carpathians. The investigations were conducted in permanent patches located in the Golesz nature reserve (Patch I), near the village of Markowce (Patch II), in the Kozigarb nature reserve (Patch III), and near the village of Żółków (Patch IV). Patch I and Patch III were established in a Tilio cordatae-Carpinetum betuli oak-hornbeam forest with undergrowth dominated by low-growth vegetation with narrow leaves, whereas Patch II and Patch IV were established in a Populetum albae riparian forest with undergrowth dominated by broad-leaved species. The most abundant population of Arum alpinum was noted in Patch I, but substantial numbers of both vegetative and reproductive individuals were also present in Patches II and IV. The occurrence of temporal variability of individual traits increased from its lowest level in Patch IV, through Patches I and II, to its highest level in Patch III. The significant positive correlation noted in all populations between length of petioles and blade dimensions, as well as between length of generative stems and infructescence traits confirmed previous findings. The conducted research showed that Arum alpinum is not closely affiliated with a specific forest community. Significant shading and moist nutrient-rich soils are suitable for this species, while dry soils and excessive insolation might limit the flowering and fruiting of individuals.","PeriodicalId":50085,"journal":{"name":"Journal of Plant Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135853466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Litter inputs greatly impact the soil properties and ecosystem functioning in forests. Quick litter decomposition is promoted, which decreases planted forest agricultural waste and increases the nutrient cycle in forests. The breakdown of litter and the release of various components depend heavily on enzymes. However, the effects of exogenous enzyme preparations on litter decomposition have hardly ever been researched. In this study, we examine how these enzymes affect the remaining rate of litter quality, nutrient content( C, N, K ), and microbial community diversity. Taking artificial Eriobotrya japonica litter as the research object, applied five exogenous enzymes (laccase, lignin peroxidase, leucine arylamidase, cellulase, and acid phosphatase) to litter leaves. During the decomposition period, the mass remaining rate and main nutrient content of the litter were measured. After decomposition at constant temperature and humidity for 189 days, determine the microbial diversity attached to the surface of the litter. Laccase and lignin peroxidase increase litter degradation by affecting microbial diversity, nitrogen (N), and kalium (K) contents. Leucine arylamidase leads to an enrichment of N, which decreases the quality of the litter. The cellulose and lignin decomposition rate in litters was unaffected by the addition of cellulase, laccase, and lignin peroxidase. Our analysis emphasizes that exogenous enzymes may alter the nutrient content and microbial community, which may affect litter decomposition. To regulate the rate at which agricultural waste litter decomposes, it is imperative to investigate the effect and mechanism of exogenous enzymes on litter decomposition.
凋落物输入对森林土壤性质和生态系统功能有很大影响。促进凋落物快速分解，减少人工林农业废弃物，增加森林养分循环。凋落物的分解和各种成分的释放在很大程度上依赖于酶。然而，外源酶制剂对凋落物分解的影响鲜有研究。在这项研究中，我们研究了这些酶如何影响凋落物质量的剩余率，营养成分(C, N, K)和微生物群落多样性。以人工枇杷凋落叶为研究对象，将5种外源酶(漆酶、木质素过氧化物酶、亮氨酸芳基酰胺酶、纤维素酶、酸性磷酸酶)应用于凋落叶。在分解过程中，测定凋落物的质量剩余率和主要养分含量。恒温恒湿分解189天后，测定凋落物表面附着的微生物多样性。漆酶和木质素过氧化物酶通过影响微生物多样性、氮和钾含量来促进凋落物的降解。亮氨酸芳酰胺酶导致N的富集，从而降低凋落物的质量。添加纤维素酶、漆酶和木质素过氧化物酶对凋落物中纤维素和木质素的分解速率没有影响。我们的分析强调，外源酶可能改变养分含量和微生物群落，从而影响凋落物的分解。为了调控农业废弃物凋落物的分解速率，研究外源酶对凋落物分解的影响及其机制势在必行。
{"title":"Exogenous enzyme addition affects litter decomposition by altering the microbial community and litter nutrient content in planted forest","authors":"Huayue Nie, Chenrui Wang, Meirong Tian, Jixi Gao","doi":"10.1093/jpe/rtad031","DOIUrl":"https://doi.org/10.1093/jpe/rtad031","url":null,"abstract":"Abstract Litter inputs greatly impact the soil properties and ecosystem functioning in forests. Quick litter decomposition is promoted, which decreases planted forest agricultural waste and increases the nutrient cycle in forests. The breakdown of litter and the release of various components depend heavily on enzymes. However, the effects of exogenous enzyme preparations on litter decomposition have hardly ever been researched. In this study, we examine how these enzymes affect the remaining rate of litter quality, nutrient content( C, N, K ), and microbial community diversity. Taking artificial Eriobotrya japonica litter as the research object, applied five exogenous enzymes (laccase, lignin peroxidase, leucine arylamidase, cellulase, and acid phosphatase) to litter leaves. During the decomposition period, the mass remaining rate and main nutrient content of the litter were measured. After decomposition at constant temperature and humidity for 189 days, determine the microbial diversity attached to the surface of the litter. Laccase and lignin peroxidase increase litter degradation by affecting microbial diversity, nitrogen (N), and kalium (K) contents. Leucine arylamidase leads to an enrichment of N, which decreases the quality of the litter. The cellulose and lignin decomposition rate in litters was unaffected by the addition of cellulase, laccase, and lignin peroxidase. Our analysis emphasizes that exogenous enzymes may alter the nutrient content and microbial community, which may affect litter decomposition. To regulate the rate at which agricultural waste litter decomposes, it is imperative to investigate the effect and mechanism of exogenous enzymes on litter decomposition.","PeriodicalId":50085,"journal":{"name":"Journal of Plant Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135592734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yan Jin, Ying Zhang, Xin Yang, Mou Zhang, Xinbo Guo, Yun Deng, Yuehua Hu, Huazheng Lu, Zhenghong Tan
Abstract Pan evaporation (Epan) is a critical measure of the atmospheric evaporation demand. Analyzing meteorological data from the Tropical Rainforest Comprehensive Meteorological Observation Field in the Xishuangbanna Tropical Botanical Garden (XTBG Meteorological Observing Station) based on physical models is helpful to improve our understanding of the state of the hydrological cycle in the Xishuangbanna tropical rainforest region. In this study, we investigated the long-term trend in Epan with the aid of observation data from 1959 through 2021. Moreover, correlation analysis of Epan was performed, such as trend test, assessment of periodic properties and abrupt change analysis. Then, D20 Epan data and related meteorological data from 1979 to 2008 were used to drive Penman‒Monteith and PenPan models for simulating Epan. The partial derivative attribution method was used to analyze the dominant factors affecting Epan. The results showed that Epan exhibits obvious periodic changes, the 19a is the first primary period. In addition, there was a clear "evaporation paradox" phenomenon in Xishuangbanna. Epan showed decreasing trend during both 1959-2008 and 2009-2018, and the decreasing trend reached a significant level with a rate of -3.404 mm·a-2 during 1959-2008. Through comparative analysis, the PenPan model was considered more suitable for simulating Epan in Xishuangbanna. In order to identify the main meteorological factors influencing Epan, complete data from the D20 pan monitoring period, namely, 1979-2008, were selected for attribution calculations. The variations in the net radiation and saturated vapor pressure deficit are the main triggers that explain the "evaporation paradox" phenomenon in Xishuangbanna.
{"title":"Observed decreasing trend in pan evaporation in a tropical rainforest region during 1959-2021","authors":"Yan Jin, Ying Zhang, Xin Yang, Mou Zhang, Xinbo Guo, Yun Deng, Yuehua Hu, Huazheng Lu, Zhenghong Tan","doi":"10.1093/jpe/rtad033","DOIUrl":"https://doi.org/10.1093/jpe/rtad033","url":null,"abstract":"Abstract Pan evaporation (Epan) is a critical measure of the atmospheric evaporation demand. Analyzing meteorological data from the Tropical Rainforest Comprehensive Meteorological Observation Field in the Xishuangbanna Tropical Botanical Garden (XTBG Meteorological Observing Station) based on physical models is helpful to improve our understanding of the state of the hydrological cycle in the Xishuangbanna tropical rainforest region. In this study, we investigated the long-term trend in Epan with the aid of observation data from 1959 through 2021. Moreover, correlation analysis of Epan was performed, such as trend test, assessment of periodic properties and abrupt change analysis. Then, D20 Epan data and related meteorological data from 1979 to 2008 were used to drive Penman‒Monteith and PenPan models for simulating Epan. The partial derivative attribution method was used to analyze the dominant factors affecting Epan. The results showed that Epan exhibits obvious periodic changes, the 19a is the first primary period. In addition, there was a clear \"evaporation paradox\" phenomenon in Xishuangbanna. Epan showed decreasing trend during both 1959-2008 and 2009-2018, and the decreasing trend reached a significant level with a rate of -3.404 mm·a-2 during 1959-2008. Through comparative analysis, the PenPan model was considered more suitable for simulating Epan in Xishuangbanna. In order to identify the main meteorological factors influencing Epan, complete data from the D20 pan monitoring period, namely, 1979-2008, were selected for attribution calculations. The variations in the net radiation and saturated vapor pressure deficit are the main triggers that explain the \"evaporation paradox\" phenomenon in Xishuangbanna.","PeriodicalId":50085,"journal":{"name":"Journal of Plant Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136279414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Soil microorganisms including many rare taxa and few abundant taxa, have different contributions to the ecosystem functions and services. High throughput sequencing technology was used to analyze the species composition of soil samples by DNA sequencing. Soil microorganisms were divided into abundant taxa and rare taxa to reveal their composition. Correlation analysis and random forest method were used to further analyze the influence of environmental factors on the community. Finally, the beta nearest taxon index (βNTI) based on the null model was used to reveal the mechanism of soil microbial community assembly. The findings indicate that in desert soils, the community assembly of rare bacteria is almost entirely dominated by a homogeneous selection of deterministic processes. For comparison, stochastic processes had more pronounced effects on the abundant bacteria. However, both abundant and rare fungi exhibited similar patterns of community assembly, that is, deterministic and stochastic processes almost jointly determined the assembly processes of fungal communities. We observed that community assembly shifted from stochastic to deterministic processes with increasing mean annual precipitation (MAP) and mean annual temperature (MAT) for abundant bacteria. Conversely, for rare fungi, there was an inclination towards a shift from deterministic to stochastic processes with rising MAT. In conclusion, our findings provide compelling evidence that MAT and MAP regulate the community assembly process of abundant and rare microbial communities in desert soil. These findings establish a theoretical foundation for future investigations into the community structure and ecological functions of soil microorganisms.
{"title":"Climatic factors regulate the assembly processes of abundant and rare microbial communities in desert soil","authors":"Qiang Sun, Hang-Yu Li, Kuan Li, Xiao-Qing Zhang, Ya-Bo Shi, Yan-Tao Wu, Xing Li, Zhi-Yong Li, Jing-Hui Zhang, Li-Xin Wang, Cun-Zhu Liang","doi":"10.1093/jpe/rtad032","DOIUrl":"https://doi.org/10.1093/jpe/rtad032","url":null,"abstract":"Abstract Soil microorganisms including many rare taxa and few abundant taxa, have different contributions to the ecosystem functions and services. High throughput sequencing technology was used to analyze the species composition of soil samples by DNA sequencing. Soil microorganisms were divided into abundant taxa and rare taxa to reveal their composition. Correlation analysis and random forest method were used to further analyze the influence of environmental factors on the community. Finally, the beta nearest taxon index (βNTI) based on the null model was used to reveal the mechanism of soil microbial community assembly. The findings indicate that in desert soils, the community assembly of rare bacteria is almost entirely dominated by a homogeneous selection of deterministic processes. For comparison, stochastic processes had more pronounced effects on the abundant bacteria. However, both abundant and rare fungi exhibited similar patterns of community assembly, that is, deterministic and stochastic processes almost jointly determined the assembly processes of fungal communities. We observed that community assembly shifted from stochastic to deterministic processes with increasing mean annual precipitation (MAP) and mean annual temperature (MAT) for abundant bacteria. Conversely, for rare fungi, there was an inclination towards a shift from deterministic to stochastic processes with rising MAT. In conclusion, our findings provide compelling evidence that MAT and MAP regulate the community assembly process of abundant and rare microbial communities in desert soil. These findings establish a theoretical foundation for future investigations into the community structure and ecological functions of soil microorganisms.","PeriodicalId":50085,"journal":{"name":"Journal of Plant Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135386132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"JPE Best Paper awards (2021)","authors":"Wen-Hao Zhang, Bernhard Schmid","doi":"10.1093/jpe/rtad029","DOIUrl":"https://doi.org/10.1093/jpe/rtad029","url":null,"abstract":"","PeriodicalId":50085,"journal":{"name":"Journal of Plant Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136375727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract High total P content but insufficient available P in soil is an obstacle that restricts the efficient utilization of P in saline-alkali soil regions. Although saline-alkali resistant P-solubilizing bacteria (PSB) solubilize insoluble P, few studies have focused on their application in plant growth. We isolated a PSB strain, identified as Bacillus sp. DYS211, from bird droppings in saline-alkali regions and determined its growth characteristics and resistance to salt and alkalis. To investigate the effect of PSB on the germination and growth of plant seeds, we performed a potting experiment using Suaeda salsa with PSB added. The PSB strain grew rapidly in the first 12 h, and the solubilized P content from PSB reached a maximum of 258.22 mg L -1 at 48 h. Saline-alkali tolerance and P-solubilizing ability tests showed that Bacillus sp. DYS211 preferred to dissolve inorganic P, was halophilic, and had a good P-solubilizing effect at 1%‒8% salinity (available P >150 mg L -1). It exhibited good P solubilization abilities when glucose and sucrose were used as C sources or when ammonium sulfate, ammonium nitrate, or yeast extract powder were used as N sources. In the growth promotion test, PSB increased seed germination, particularly under high salinity stress, with a growth-promotion of 8.33%. The PSB also improved the growth of S. salsa, including plant height and biomass (up to three times) under both saline and alkaline conditions, and the stem diameter increased under high salinity stress. This strain demonstrates potential for vegetation restoration in saline-alkali regions.
土壤全磷含量高而速效磷不足是制约盐碱地土壤磷有效利用的障碍。虽然耐盐碱增磷菌(PSB)可以增溶不溶性磷，但很少有研究关注其在植物生长中的应用。从盐碱区鸟类粪便中分离到一株PSB，鉴定为Bacillus sp. DYS211，并对其生长特性和对盐碱的抗性进行了测定。为研究PSB对植物种子萌发和生长的影响，采用添加PSB的盐田盆栽试验。PSB菌株在培养前12 h生长迅速，48 h溶磷量最大，达到258.22 mg L -1。耐盐碱性和增磷能力试验表明，DYS211芽孢杆菌倾向于溶解无机磷，为嗜盐菌，在1% ~ 8%盐度(可溶P >150 mg L -1)条件下具有良好的增磷效果。以葡萄糖和蔗糖为C源，以硫酸铵、硝酸铵、酵母浸膏粉为N源，均表现出较好的增磷能力。在促生长试验中，PSB对种子萌发有促进作用，特别是在高盐胁迫下，促进率为8.33%。在高盐胁迫和高碱胁迫下，PSB均能显著提高盐沙菌的株高和生物量(最高可达3倍)，且高盐胁迫下茎粗增加。该菌株显示了在盐碱区植被恢复中的潜力。
{"title":"Soil P solubilization and plant growth promotion by a saline-alkali-tolerant P-solubilizing bacterium, <i>Bacillus</i> sp. DYS211","authors":"Wei Wang, Xiaodan Sun, Wenhao Huang, Xiaoting Men, Shijie Yi, Fengrong Zheng, Zhaohui Zhang, Zongling Wang","doi":"10.1093/jpe/rtad028","DOIUrl":"https://doi.org/10.1093/jpe/rtad028","url":null,"abstract":"Abstract High total P content but insufficient available P in soil is an obstacle that restricts the efficient utilization of P in saline-alkali soil regions. Although saline-alkali resistant P-solubilizing bacteria (PSB) solubilize insoluble P, few studies have focused on their application in plant growth. We isolated a PSB strain, identified as Bacillus sp. DYS211, from bird droppings in saline-alkali regions and determined its growth characteristics and resistance to salt and alkalis. To investigate the effect of PSB on the germination and growth of plant seeds, we performed a potting experiment using Suaeda salsa with PSB added. The PSB strain grew rapidly in the first 12 h, and the solubilized P content from PSB reached a maximum of 258.22 mg L -1 at 48 h. Saline-alkali tolerance and P-solubilizing ability tests showed that Bacillus sp. DYS211 preferred to dissolve inorganic P, was halophilic, and had a good P-solubilizing effect at 1%‒8% salinity (available P &gt;150 mg L -1). It exhibited good P solubilization abilities when glucose and sucrose were used as C sources or when ammonium sulfate, ammonium nitrate, or yeast extract powder were used as N sources. In the growth promotion test, PSB increased seed germination, particularly under high salinity stress, with a growth-promotion of 8.33%. The PSB also improved the growth of S. salsa, including plant height and biomass (up to three times) under both saline and alkaline conditions, and the stem diameter increased under high salinity stress. This strain demonstrates potential for vegetation restoration in saline-alkali regions.","PeriodicalId":50085,"journal":{"name":"Journal of Plant Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135209761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zheng-chao Yu, Xiao-Ting Zheng, W. He, Wei Lin, Guan-Zhao Yan, Hui Zhu, C. Peng
Differences in plant leaf elemental content due to seasonal climate change reflect potential plant growth strategies. However, the distribution patterns of elements mediated by seasonal climate change remain unclear. This limits assessment of plant growth status and prediction of plant growth dynamics under global climate change. We collected 41 subtropical evergreen broadleaf plant leaves (31 tree species and 10 shrub species) during the wet and dry seasons, and determined contents of macroelements and microelements in leaves by inductively coupled plasma mass spectrometer (ICP-MS). Our results show that 41 plant leaves have significantly greater macroelement contents and significantly lower microelement contents in wet season than dry season. The highest macroelement content was in tree layer plants in wet season, followed by tree layer plants in dry season and shrub layer plants in wet season, the lowest was in shrub layer plants in dry season. The highest microelement content was in tree and shrub layer plants in dry season, followed by shrub layer plants in wet season, the lowest was in tree layer plants in wet season. Our results show that macroelement and microelement contents of plant leaves with different vertical structures are affected by seasonal climate change. The transition from wet to dry season is detrimental to tree layer plants growth, but has less impact on shrub layer plants growth. This study provides valuable evidence for predicting how different vertically structured subtropical evergreen broadleaf plants can adapt to changes in wet and dry season environments and to future global climate change.
{"title":"Different responses of macro- and microelement contents of 41 subtropical plants to environmental changes in the wet and dry seasons","authors":"Zheng-chao Yu, Xiao-Ting Zheng, W. He, Wei Lin, Guan-Zhao Yan, Hui Zhu, C. Peng","doi":"10.1093/jpe/rtad027","DOIUrl":"https://doi.org/10.1093/jpe/rtad027","url":null,"abstract":"\u0000 Differences in plant leaf elemental content due to seasonal climate change reflect potential plant growth strategies. However, the distribution patterns of elements mediated by seasonal climate change remain unclear. This limits assessment of plant growth status and prediction of plant growth dynamics under global climate change. We collected 41 subtropical evergreen broadleaf plant leaves (31 tree species and 10 shrub species) during the wet and dry seasons, and determined contents of macroelements and microelements in leaves by inductively coupled plasma mass spectrometer (ICP-MS). Our results show that 41 plant leaves have significantly greater macroelement contents and significantly lower microelement contents in wet season than dry season. The highest macroelement content was in tree layer plants in wet season, followed by tree layer plants in dry season and shrub layer plants in wet season, the lowest was in shrub layer plants in dry season. The highest microelement content was in tree and shrub layer plants in dry season, followed by shrub layer plants in wet season, the lowest was in tree layer plants in wet season. Our results show that macroelement and microelement contents of plant leaves with different vertical structures are affected by seasonal climate change. The transition from wet to dry season is detrimental to tree layer plants growth, but has less impact on shrub layer plants growth. This study provides valuable evidence for predicting how different vertically structured subtropical evergreen broadleaf plants can adapt to changes in wet and dry season environments and to future global climate change.","PeriodicalId":50085,"journal":{"name":"Journal of Plant Ecology","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42308397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kittisack Phoutthavong, M. Katabuchi, A. Nakamura, Xiao Cheng, M. Cao
Plant species often show different taxonomic and functional characteristics between limestone forests (LFs) and non-limestone forests (NLFs) in tropical regions. Pteridophyte species are one of the major components in tropical rainforests; however, the morphological and physiological characteristics of pteridophytes occurring in LFs are poorly understood. We evaluated the differences in seven leaf functional traits between pteridophyte species in LFs and NLFs in southwest China. We measured leaf water content, morphological traits including leaf size, leaf thickness, stomatal length, and stomatal density, and physiological traits including stomatal conductance and photosynthetic rate from a total of 25 species. We found that pteridophytes had thicker and smaller leaves with lower stomatal density and lower stomatal conductance in LFs compared to NLFs, probably reflecting their adaptations in water use strategies. These differences, however, became non-significant when we accounted for phylogenetic relationships, suggesting that phylogenetic conservatism shapes trait differences and ultimately species composition in LFs and NLFs. Some species that were commonly found in both LFs and NLFs demonstrated intraspecific variation between forest types, with lower stomatal density in LFs. Our findings suggest that only a handful of pteridophyte species can adapt their water use strategies in both LFs and NLFs, and thus adaptative radiation is unlikely to have occurred.
{"title":"Interspecific and intraspecific adaptations of pteridophyte leaf traits in limestone and non-limestone forests of monsoon tropical regions of southwest China","authors":"Kittisack Phoutthavong, M. Katabuchi, A. Nakamura, Xiao Cheng, M. Cao","doi":"10.1093/jpe/rtad026","DOIUrl":"https://doi.org/10.1093/jpe/rtad026","url":null,"abstract":"\u0000 Plant species often show different taxonomic and functional characteristics between limestone forests (LFs) and non-limestone forests (NLFs) in tropical regions. Pteridophyte species are one of the major components in tropical rainforests; however, the morphological and physiological characteristics of pteridophytes occurring in LFs are poorly understood. We evaluated the differences in seven leaf functional traits between pteridophyte species in LFs and NLFs in southwest China. We measured leaf water content, morphological traits including leaf size, leaf thickness, stomatal length, and stomatal density, and physiological traits including stomatal conductance and photosynthetic rate from a total of 25 species. We found that pteridophytes had thicker and smaller leaves with lower stomatal density and lower stomatal conductance in LFs compared to NLFs, probably reflecting their adaptations in water use strategies. These differences, however, became non-significant when we accounted for phylogenetic relationships, suggesting that phylogenetic conservatism shapes trait differences and ultimately species composition in LFs and NLFs. Some species that were commonly found in both LFs and NLFs demonstrated intraspecific variation between forest types, with lower stomatal density in LFs. Our findings suggest that only a handful of pteridophyte species can adapt their water use strategies in both LFs and NLFs, and thus adaptative radiation is unlikely to have occurred.","PeriodicalId":50085,"journal":{"name":"Journal of Plant Ecology","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45170263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ecological intensification of agriculture through biodiversity management: introduction","authors":"B. Schmid, C. Schöb","doi":"10.1093/jpe/rtad018","DOIUrl":"https://doi.org/10.1093/jpe/rtad018","url":null,"abstract":"","PeriodicalId":50085,"journal":{"name":"Journal of Plant Ecology","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46705195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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