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Hu T, Wu Z, Deng M, Liu H, Xiao J, Wei Q, Yu F. Understanding Water Utilization Mechanisms in Degrading Bamboo Shoots: A Cytological and Physiological Study. PLANTS (BASEL, SWITZERLAND) 2024; 13:1969. [PMID: 39065495 PMCID: PMC11281227 DOI: 10.3390/plants13141969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/10/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024]
Abstract
Degradation of shoots, characterized by stunted growth and signs of water deficit, is common in bamboo stands. However, the specific mechanisms underlying water utilization in degrading shoots remain unclear. This study sought to address this gap by harvesting bamboo shoots and culms of Phyllostachys edulis 'Pachyloen', employing cytological and physiological techniques to compare water utilization mechanisms between healthy and degrading shoots, and investigating the water supply to bamboo shoots by the parent bamboo. The water pressure in the degrading shoots was markedly lower compared to that of the healthy shoots, and it declined as the degradation progressed, resulting in reduced water content and the cessation of guttation in the degrading shoots. In conditions of water deficit, the percentage of free water in bamboo shoots decreased while the percentages of bound and semi-bound water increased, with the proportion of semi-bound water reaching as high as 88.13% in the late stages of degradation. The water potential of parent bamboo culms of different ages varied at different times of the day and during different growth stages of bamboo shoots, showing a strong association with the development of bamboo shoots. Conversely, the correlation between changes in the water potential of bamboo shoots and their degradation patterns was found to be comparatively minimal. The weakening of the connection between the bamboo shoots and the parent bamboo culms may play a significant role in the degradation of the bamboo shoots. This is evidenced by a decrease in the fluorescence intensity of the nucleus in bamboo shoots and the degradation of genetic material. This study lays the foundation for future research into the mechanisms of bamboo shoot degradation.
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Affiliation(s)
- Tianyi Hu
- Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species (2024SSY04093), Jiangxi Agriculture University, Nanchang 330045, China; (T.H.)
| | - Zhengchun Wu
- Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species (2024SSY04093), Jiangxi Agriculture University, Nanchang 330045, China; (T.H.)
| | - Meng Deng
- Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species (2024SSY04093), Jiangxi Agriculture University, Nanchang 330045, China; (T.H.)
| | - Haiwen Liu
- Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species (2024SSY04093), Jiangxi Agriculture University, Nanchang 330045, China; (T.H.)
| | - Jiao Xiao
- Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species (2024SSY04093), Jiangxi Agriculture University, Nanchang 330045, China; (T.H.)
| | - Qiang Wei
- Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species (2024SSY04093), Jiangxi Agriculture University, Nanchang 330045, China; (T.H.)
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Bamboo Research Institute, Key Laboratory of National Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, School of Life Sciences, Nanjing Forestry University, Nanjing 210037, China
| | - Fen Yu
- Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species (2024SSY04093), Jiangxi Agriculture University, Nanchang 330045, China; (T.H.)
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Xu Y, Du H, Mao F, Li X, Zhou G, Huang Z, Guo K, Zhang M, Luo X, Chen C, Zhao Y. Effects of chlorophyll fluorescence on environment and gross primary productivity of moso bamboo during the leaf-expansion stage. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 360:121185. [PMID: 38788407 DOI: 10.1016/j.jenvman.2024.121185] [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: 04/07/2024] [Revised: 05/06/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024]
Abstract
Chlorophyll fluorescence is the long-wave light released by the residual energy absorbed by vegetation after photosynthesis and dissipation, which can directly and non-destructively reflect the photosynthetic state of plants from the perspective of the mechanism of photosynthetic process. Moso bamboo has a substantial carbon sequestration ability, and leaf-expansion stage is an important phenological period for carbon sequestration. Gross primary production (GPP) is a key parameter reflecting vegetation carbon sequestration process. However, the ability of chlorophyll fluorescence in moso bamboo to explain GPP changes is unclear. The research area of this study is located in the bamboo forest near the flux station of Anji County, Zhejiang Province, where an observation tower is built to monitor the carbon flux and meteorological change of bamboo forest. The chlorophyll fluorescence physiological parameters (Fp) and fluorescence yield (Fy) indices were measured and calculated for the leaves of newborn moso bamboo (I Du bamboo) and the old leaves of 4- to 5-year-old moso bamboo (Ⅲ Du bamboo) during the leaf-expansion stage. The chlorophyll fluorescence in response to the environment and its effect on carbon flux were analyzed. The results showed that: Fv/Fm, Y(II) and α of Ⅰ Du bamboo gradually increased, while Ⅲ Du bamboo gradually decreased, and FYint and FY687/FY738 of Ⅰ Du bamboo were higher than those of Ⅲ Du bamboo; moso bamboo was sensitive to changes in air temperature(Ta), relative humidity(RH), water vapor pressure(E), soil temperature(ST) and soil water content (SWC), the Fy indices of the upper, middle and lower layers were significantly correlated with Ta, E and ST; single or multiple vegetation indices were able to estimate the fluorescence yield indices well (all with R2 greater than 0.77); chlorophyll fluorescence (Fp and Fy indices) of Ⅰ Du bamboo and Ⅲ Du bamboo could explain 74.4% and 72.7% of the GPP variation, respectively; chlorophyll fluorescence and normalized differential vegetation index of the canopy (NDVIc) could estimate GPP well using random forest (Ⅰ Du bamboo: r = 0.929, RMSE = 0.069 g C·m-2; Ⅲ Du bamboo: r = 0.899, RMSE = 0.134 g C·m-2). The results of this study show that chlorophyll fluorescence can provide a basis for judging the response of moso bamboo to environmental changes and can well explain GPP. This study has important scientific significance for evaluating the potential mechanisms of growth, stress feedback and photosynthetic carbon sequestration of bamboo.
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Affiliation(s)
- Yanxin Xu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China
| | - Huaqiang Du
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China.
| | - Fangjie Mao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China
| | - Xuejian Li
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China
| | - Guomo Zhou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China
| | - Zihao Huang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China
| | - Keruo Guo
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China
| | - Meng Zhang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China
| | - Xin Luo
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China
| | - Chao Chen
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China
| | - Yinyin Zhao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China; Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A & F University, Hangzhou, 311300, China; School of Environmental and Resources Science, Zhejiang A & F University, Hangzhou, 311300, China
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Liu X, Zhou S, Hu J, Zou X, Tie L, Li Y, Cui X, Huang C, Sardans J, Peñuelas J. Variations and trade-offs in leaf and culm functional traits among 77 woody bamboo species. BMC PLANT BIOLOGY 2024; 24:387. [PMID: 38724946 PMCID: PMC11084126 DOI: 10.1186/s12870-024-05108-2] [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: 03/04/2024] [Accepted: 05/05/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND Woody bamboos are the only diverse large perennial grasses in mesic-wet forests and are widely distributed in the understory and canopy. The functional trait variations and trade-offs in this taxon remain unclear due to woody bamboo syndromes (represented by lignified culm of composed internodes and nodes). Here, we examined the effects of heritable legacy and occurrence site climates on functional trait variations in leaf and culm across 77 woody bamboo species in a common garden. We explored the trade-offs among leaf functional traits, the connection between leaf nitrogen (N), phosphorus (P) concentrations and functional niche traits, and the correlation of functional traits between leaves and culms. RESULTS The Bayesian mixed models reveal that the combined effects of heritable legacy (phylogenetic distances and other evolutionary processes) and occurrence site climates accounted for 55.10-90.89% of the total variation among species for each studied trait. The standardized major axis analysis identified trade-offs among leaf functional traits in woody bamboo consistent with the global leaf economics spectrum; however, compared to non-bamboo species, the woody bamboo exhibited lower leaf mass per area but higher N, P concentrations and assimilation, dark respiration rates. The canonical correlation analysis demonstrated a positive correlation (ρ = 0.57, P-value < 0.001) between leaf N, P concentrations and morphophysiology traits. The phylogenetic principal components and trait network analyses indicated that leaf and culm traits were clustered separately, with leaf assimilation and respiration rates associated with culm ground diameter. CONCLUSION Our study confirms the applicability of the leaf economics spectrum and the biogeochemical niche in woody bamboo taxa, improves the understanding of woody bamboo leaf and culm functional trait variations and trade-offs, and broadens the taxonomic units considered in plant functional trait studies, which contributes to our comprehensive understanding of terrestrial forest ecosystems.
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Affiliation(s)
- Xiong Liu
- College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River & Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, SICAU, Chengdu, 611130, China
- CREAF, Cerdanyola del Vallès, Catalonia, 08193, Spain
- Global Ecology Unit, CSIC, CREAF-CSIC-UAB, Bellaterra, Catalonia, 08193, Spain
| | - Shixing Zhou
- College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River & Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, SICAU, Chengdu, 611130, China
| | - Junxi Hu
- College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River & Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, SICAU, Chengdu, 611130, China
| | - Xingcheng Zou
- College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River & Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, SICAU, Chengdu, 611130, China
| | - Liehua Tie
- Institute for Forest Resources and Environment of Guizhou, Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, College of Forestry, Guizhou University, Guiyang, 550025, China
| | - Ying Li
- College of Grassland Science, Beijing Forestry University, Beijing, 100091, China
| | - Xinglei Cui
- College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River & Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, SICAU, Chengdu, 611130, China
| | - Congde Huang
- College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China.
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River & Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, SICAU, Chengdu, 611130, China.
| | - Jordi Sardans
- CREAF, Cerdanyola del Vallès, Catalonia, 08193, Spain
- Global Ecology Unit, CSIC, CREAF-CSIC-UAB, Bellaterra, Catalonia, 08193, Spain
| | - Josep Peñuelas
- CREAF, Cerdanyola del Vallès, Catalonia, 08193, Spain
- Global Ecology Unit, CSIC, CREAF-CSIC-UAB, Bellaterra, Catalonia, 08193, Spain
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Zhang X, Tong C, Fang D, Mei T, Li Y. Different hydraulic and photosynthetic responses to summer drought between newly sprouted and established Moso bamboo culms. FRONTIERS IN PLANT SCIENCE 2023; 14:1252862. [PMID: 37900750 PMCID: PMC10602750 DOI: 10.3389/fpls.2023.1252862] [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: 07/04/2023] [Accepted: 09/22/2023] [Indexed: 10/31/2023]
Abstract
The subtropical regions in China are prone to recurrent summer droughts induced by the Western Pacific Subtropical High-Pressure, which has induced the death of tens of millions of culms of Moso bamboo (Phyllostachys edulis (Carriere) J. Houzeau), a widely distributed giant bamboo with high economic and ecological values. In the future, the intensity and frequency of the summer drought are projected to increase in these areas due to global climate change, which may lead to significant age-specific mortality of Moso bamboo. So far, it is still unclear about the age-specific response mechanisms of hydraulic traits and carbon balance of Moso bamboo when it is suffering to an ongoing summer drought. This study aimed to investigate the hydraulic and photosynthetic responses of newly sprouted (1 year old) and established (2-5 years old) culms of Moso bamboo to summer drought, which was manipulated by throughfall reduction in Lin'an of Zhejiang. The results showed that both newly sprouted and established culms had a gradually weakening hydraulic conductivity and photosynthesis during the whole drought process. In the early stage of the manipulated drought, the established culms had more loss of hydraulic conductivity than the newly sprouted culms. However, the newly sprouted culms had significant more loss of hydraulic conductivity and lower photosynthetic rates and stomatal conductance in the middle and late stages of the manipulated drought. The results suggest that the newly sprouted culms were more susceptible to summer drought than established culms due to the combined effects of hydraulic damage and photosynthetic restriction, explaining why the newly sprouted culms have higher mortality than elder culms when subjected to extreme drought. These findings provided insights into the mechanisms of Moso bamboo's age-specific drought-induced mortality, which will help for the anti-drought management of bamboo.
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Affiliation(s)
- Xin Zhang
- State Key Laboratory of Subtropical Silvilculture, Zhejiang A&F University, Lin’an, Zhejiang, China
| | - Chazi Tong
- State Key Laboratory of Subtropical Silvilculture, Zhejiang A&F University, Lin’an, Zhejiang, China
| | - Dongming Fang
- State Key Laboratory of Subtropical Silvilculture, Zhejiang A&F University, Lin’an, Zhejiang, China
- College of Horticulture, Jiyang College of Zhejiang Agriculture and Forestry University, Zhuji, Zhejiang, China
| | - Tingting Mei
- State Key Laboratory of Subtropical Silvilculture, Zhejiang A&F University, Lin’an, Zhejiang, China
| | - Yan Li
- State Key Laboratory of Subtropical Silvilculture, Zhejiang A&F University, Lin’an, Zhejiang, China
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Gao J, Duan M, Hasi G, Yang J, Yan C, Kang Y, Qi Z. Comparison of two contrasting Leymus chinensis accessions reveals the roles of the cell wall and auxin in rhizome development. JOURNAL OF PLANT PHYSIOLOGY 2023; 287:154003. [PMID: 37301035 DOI: 10.1016/j.jplph.2023.154003] [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: 04/17/2023] [Revised: 05/01/2023] [Accepted: 05/06/2023] [Indexed: 06/12/2023]
Abstract
Leymus chinensis, a perennial native forage grass, is widely distributed in the steppes of Inner Mongolia as the dominant species. The main reproductive strategy of this grass is clonal propagation, which occurs via the proliferation of subterranean horizontal stems known as rhizomes. To elucidate the mechanism underlying rhizome development in this grass, we collected 60 accessions of L. chinensis and evaluated their rhizome development. One accession, which we named SR-74 (Strong Rhizomes), had significantly better rhizome development capacity than the accession WR-16 (Weak Rhizomes) in terms of rhizome number, total and primary rhizome length, and number of rhizome seedlings. Rhizome elongation was positively correlated with the number of internodes in the rhizome, which affected plant biomass. Compared to WR-16, SR-74 had higher rhizome tip hardness, higher abundance of transcripts participating in the biosynthesis of cell wall components, and higher levels of the metabolites L-phenylalanine, trans-cinnamic acid, 3-coumaric acid, ferulic acid, and coniferin. These metabolites in the phenylpropanoid biosynthesis pathway are precursors of lignin. In addition, SR-74 rhizomes contained higher amounts of auxin and auxin metabolites, including L-Trp, IPA, IBA, IAA and IAA-Asp, as well as upregulated expression of the auxin biosynthesis and signaling genes YUCCA6, YUCCA8, YUCCA10, YUCCA11, PIN1, PIN2, UGT1, UGT2, UGT4, UGT10, GH3, IAA7, IAA23, and IAA30. We propose a network between auxin signaling and the cell wall underlying rhizome development in L. chinensis.
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Affiliation(s)
- Jie Gao
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, China
| | - Menglu Duan
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, China
| | - Gaowa Hasi
- Grassland Work Station of East Ujimqin Banner of Xilin Gol League of Inner Mongolia, East Ujimqin Banner, 026300, China
| | - Jia Yang
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, China
| | - Chunxia Yan
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, China.
| | - Yan Kang
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, China.
| | - Zhi Qi
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, China.
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Wu C, Bai Y, Cao Z, Xu J, Xie Y, Zheng H, Jiang J, Mu C, Cheng W, Fang H, Gao J. Plasticity in the Morphology of Growing Bamboo: A Bayesian Analysis of Exogenous Treatment Effects on Plant Height, Internode Length, and Internode Numbers. PLANTS (BASEL, SWITZERLAND) 2023; 12:1713. [PMID: 37111934 PMCID: PMC10145155 DOI: 10.3390/plants12081713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/15/2023] [Accepted: 04/17/2023] [Indexed: 06/19/2023]
Abstract
Sucrose (Suc) and gibberellin (GA) can promote the elongation of certain internodes in bamboo. However, there is a lack of field studies to support these findings and no evidence concerning how Suc and GA promote the plant height of bamboo by regulating the internode elongation and number. We investigated the plant height, the length of each internode, and the total number of internodes of Moso bamboo (Phyllostachys edulis) under exogenous Suc, GA, and control group (CTRL) treatments in the field and analyzed how Suc and GA affected the height of Moso bamboo by promoting the internode length and number. The lengths of the 10th-50th internodes were significantly increased under the exogenous Suc and GA treatments, and the number of internodes was significantly increased by the exogenous Suc treatment. The increased effect of Suc and GA exogenous treatment on the proportion of longer internodes showed a weakening trend near the plant height of 15-16 m compared with the CTRL, suggesting that these exogenous treatments may be more effective in regions where bamboo growth is suboptimal. This study demonstrated that both the exogenous Suc and GA treatments could promote internode elongation of Moso bamboo in the field. The exogenous GA treatment had a stronger effect on internode elongation, and the exogenous Suc treatment had a stronger effect on increasing the internode numbers. The increase in plant height by the exogenous Suc and GA treatments was promoted by the co-elongation of most internodes or the increase in the proportion of longer internodes.
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Affiliation(s)
- Chongyang Wu
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology/International Center for Bamboo and Rattan, Beijing 100102, China; (C.W.); (Y.B.); (J.X.); (Y.X.); (J.J.); (C.M.); (W.C.); (H.F.)
| | - Yucong Bai
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology/International Center for Bamboo and Rattan, Beijing 100102, China; (C.W.); (Y.B.); (J.X.); (Y.X.); (J.J.); (C.M.); (W.C.); (H.F.)
| | - Zhihua Cao
- Anhui Academy of Forestry, Hefei 230036, China
| | - Junlei Xu
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology/International Center for Bamboo and Rattan, Beijing 100102, China; (C.W.); (Y.B.); (J.X.); (Y.X.); (J.J.); (C.M.); (W.C.); (H.F.)
| | - Yali Xie
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology/International Center for Bamboo and Rattan, Beijing 100102, China; (C.W.); (Y.B.); (J.X.); (Y.X.); (J.J.); (C.M.); (W.C.); (H.F.)
| | - Huifang Zheng
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology/International Center for Bamboo and Rattan, Beijing 100102, China; (C.W.); (Y.B.); (J.X.); (Y.X.); (J.J.); (C.M.); (W.C.); (H.F.)
| | - Jutang Jiang
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology/International Center for Bamboo and Rattan, Beijing 100102, China; (C.W.); (Y.B.); (J.X.); (Y.X.); (J.J.); (C.M.); (W.C.); (H.F.)
| | - Changhong Mu
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology/International Center for Bamboo and Rattan, Beijing 100102, China; (C.W.); (Y.B.); (J.X.); (Y.X.); (J.J.); (C.M.); (W.C.); (H.F.)
| | - Wenlong Cheng
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology/International Center for Bamboo and Rattan, Beijing 100102, China; (C.W.); (Y.B.); (J.X.); (Y.X.); (J.J.); (C.M.); (W.C.); (H.F.)
| | - Hui Fang
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology/International Center for Bamboo and Rattan, Beijing 100102, China; (C.W.); (Y.B.); (J.X.); (Y.X.); (J.J.); (C.M.); (W.C.); (H.F.)
| | - Jian Gao
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology/International Center for Bamboo and Rattan, Beijing 100102, China; (C.W.); (Y.B.); (J.X.); (Y.X.); (J.J.); (C.M.); (W.C.); (H.F.)
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Fadrique B, Baraloto C, Bravo‐Avila CH, Feeley KJ. Bamboo climatic tolerances are decoupled from leaf functional traits across an Andean elevation gradient. OIKOS 2022. [DOI: 10.1111/oik.09229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Belen Fadrique
- School of Geography, Univ. of Leeds Leeds UK
- International Center for Tropical Botany, Dept of Biological Sciences, Florida International Univ. Miami FL USA
| | | | - Catherine H. Bravo‐Avila
- International Center for Tropical Botany, Dept of Biological Sciences, Florida International Univ. Miami FL USA
| | - Kenneth J. Feeley
- Dept of Biology, Univ. of Miami Miami FL USA
- International Center for Tropical Botany, Dept of Biological Sciences, Florida International Univ. Miami FL USA
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Abstract
Forest research and professional workforces continue to be dominated by men, particularly at senior and management levels. In this review, we identify some of the historical and ongoing barriers to improved gender inclusion and suggest some solutions. We showcase a selection of women in forestry from different disciplines and parts of the globe to highlight a range of research being conducted by women in forests. Boosting gender equity in forest disciplines requires a variety of approaches across local, regional and global scales. It is also important to include intersectional analyses when identifying barriers for women in forestry, but enhanced equity, diversity and inclusion will improve outcomes for forest ecosystems and social values of forests, with potential additional economic benefits.
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Mei T, Liu X, Fang D, Zhou G, Ye C, Li P, Shi Y, Du H, Berninger F, Hölscher D. Spring Leafing Phenology Favors Younger Culms of Moso Bamboo: Aspects From Water Use Relations. FRONTIERS IN PLANT SCIENCE 2020; 11:550. [PMID: 32457783 PMCID: PMC7225348 DOI: 10.3389/fpls.2020.00550] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 04/14/2020] [Indexed: 05/24/2023]
Abstract
As the most widely distributed giant running bamboo species in China, Moso bamboo (Phyllostachys edulis) can accomplish both development of newly sprouted culms and leaf renewal of odd-year-old culms within a few months in spring. The two phenological events in spring may together change water distribution among culms in different age categories within a stand, which may differ from our conventional understanding of the negative age effect on bamboo water use. Therefore, to explore the effect of spring shooting and leaf phenology on age-specific water use of Moso bamboo and potential water redistribution, we monitored water use of four culm age categories (newly sprouted, 1-, 2-, and 3-year-old; namely A0, A1, A2, A3) in spring from March to June 2018. For newly sprouting culms, the spring phenological period was classified into five stages (incubation, culm-elongation, branch-development, leafing, established). Over these phenological stages, age-specific accumulated sap flux density showed different patterns. The oldest culms, A3, were not influenced by leaf renewal and kept nearly constant and less water use than the other aged culms. However, A2, which did not renew their leaves, had the most water use at the two initial stages (incubation, culm-elongation) but consumed less water than A0 and A1 after the fourth stage (leafing). At the end of June, water use of the four age categories sorted in order of A0 > A1 > A2 > A3, which confirms the conventional thought and observations, i.e., a negative age effect. The results indicate that new leaf flushing may benefit younger culms (A1 and A0) more than older culms (A2 and A3), i.e., increasing their transpiration response to radiation and share of the stand transpiration. With the underground connected rhizome system, the bamboo stand as an integration seems to balance its water use among culms of different ages to support the water use of freshly sprouted culms during their developing period.
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Affiliation(s)
- Tingting Mei
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, China
| | - Xiang Liu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, China
| | - Dongming Fang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, China
| | - Guomo Zhou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, China
| | - Chongyu Ye
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, China
| | - Pingheng Li
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, China
| | - Yongjun Shi
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, China
| | - Huaqiang Du
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, China
| | - Frank Berninger
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, China
- Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
| | - Dirk Hölscher
- Tropical Silviculture and Forest Ecology, University of Goettingen, Göttingen, Germany
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