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Wang T, Li H, Yang X, Zhang Z, Liu S, Yang J, Lu H, Li S, Li M, Guo X, Li Y. Exotic plantations differ in "nursing" an understory invader: A probe into invasional meltdown. Ecol Evol 2024; 14:e11398. [PMID: 38799399 PMCID: PMC11116753 DOI: 10.1002/ece3.11398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 04/23/2024] [Accepted: 04/26/2024] [Indexed: 05/29/2024] Open
Abstract
Forest plantations most likely promote exotic plant invasion. Using an in situ monitoring method, this study investigated the traits correlated with growth and reproduction of an understory invader, Phytolacca americana L., and ecological factors including understory irradiance, soil stoichiometry and microbial patterns associated with these traits in different exotic plantations of Robinia pseudoacacia L. and Pinus thunbergii Parl. at Mount Lao, Qingdao, China. We found that the traits of P. americana underneath the R. pseudoacacia stand might be situated at the fast side of the trait economic spectrum. The R. pseudoacacia stand appeared to "nurse" P. americana. Furthermore, we intended to explain the nurse effects of R. pseudoacacia stands by examining their ecological factors. First, the R. pseudoacacia stand created understory light attenuation, which matched the sciophilous feature of P. americana. Second, the soil beneath the R. pseudoacacia stand might benefit P. americana more since the soil has greater resource availability. Third, a higher microbial diversity was found in the soil derived from P. americana underneath the R. pseudoacacia stand. A greater abundance of plant pathogens was detected in the soil derived from P. americana in the R. pseudoacacia stand, while more abundant mycorrhizal fungi were detected in the P. thunbergii stand. We speculate that plant pathogens can defend P. americana from aggression from other understory competitors. The mycorrhizal fungi in the P. thunbergii stand might benefit P. americana while simultaneously benefiting other understory plants. Intensive competition from other plants might interfere with P. americana. The potential relationships between plant performance and ecological factors may explain the invasion mechanism of P. americana. The present study provides a novel insight on the facilitative effects of exotic tree plantation on an exotic herb through the modification of soil biota, with implications for the biocontrol of invasive species and forest management and conservation.
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Affiliation(s)
- Tong Wang
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
| | - Haifang Li
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
| | - Xue Yang
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
| | - Zeyu Zhang
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
| | - Shengwen Liu
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
| | - Jinming Yang
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
| | - Huicui Lu
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
| | - Shimei Li
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
| | - Mingyan Li
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
| | - Xiao Guo
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
- Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural UniversityDongyingShandong ProvinceChina
| | - Yuwu Li
- College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong ProvinceChina
- Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural UniversityDongyingShandong ProvinceChina
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Solé-Gil A, López A, Ombrosi D, Urbez C, Brumós J, Agustí J. Identification of MeC3HDZ1/MeCNA as a potential regulator of cassava storage root development. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 339:111938. [PMID: 38072332 DOI: 10.1016/j.plantsci.2023.111938] [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: 05/31/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023]
Abstract
The storage root (SR) of cassava is the main staple food in sub-Saharan Africa, where it feeds over 500 million people. However, little is known about the genetic and molecular regulation underlying its development. Unraveling such regulation would pave the way for biotechnology approaches aimed at enhancing cassava productivity. Anatomical studies indicate that SR development relies on the massive accumulation of xylem parenchyma, a cell-type derived from the vascular cambium. The C3HDZ family of transcription factors regulate cambial cells proliferation and xylem differentiation in Arabidopsis and other species. We thus aimed at identifying C3HDZ proteins in cassava and determining whether any of them shows preferential activity in the SR cambium and/or xylem. Using phylogeny and synteny studies, we identified eight C3HDZ proteins in cassava, namely MeCH3DZ1-8. We observed that MeC3HDZ1 is the MeC3HDZ gene displaying the highest expression in SR and that, within that organ, the gene also shows high expression in cambium and xylem. In-silico analyses revealed the existence of a number of potential C3HDZ targets displaying significant preferential expression in the SR. Subsequent Y1H analyses proved that MeC3HDZ1 can bind canonical C3HDZ binding sites, present in the promoters of these targets. Transactivation assays demonstrated that MeC3HDZ1 can regulate the expression of genes downstream of promoters harboring such binding sites, thereby demonstrating that MeC3HDZ1 has C3HDZ transcription factor activity. We conclude that MeC3HDZ1 may be a key factor for the regulation of storage root development in cassava, holding thus great promise for future biotechnology applications.
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Affiliation(s)
- Anna Solé-Gil
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain
| | - Anselmo López
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain
| | - Damiano Ombrosi
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain
| | - Cristina Urbez
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain
| | - Javier Brumós
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain.
| | - Javier Agustí
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain.
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Zainuddin IM, Lecart B, Sudarmonowati E, Vanderschuren H. A method for rapid and homogenous initiation of post-harvest physiological deterioration in cassava storage roots identifies Indonesian cultivars with improved shelf-life performance. PLANT METHODS 2023; 19:4. [PMID: 36653871 PMCID: PMC9847153 DOI: 10.1186/s13007-022-00977-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Cassava is the most cultivated and consumed root crop in the world. One of the major constraints to the cassava value chain is the short shelf life of cassava storage roots which is primarily due to the so-called post-harvest physiological deterioration (PPD). The identification of natural sources of PPD tolerance represents a key approach to mitigating PPD losses by generating farmer- and industry-preferred cassava cultivars with prolonged shelf life. In the present study, a PPD assessment method was developed to screen for PPD tolerance in the cassava germplasm. The proposed PPD assessment method displayed a reduced rate of microbial infection and allowed a rapid and homogenous development of typical PPD symptoms in the cassava storage roots. We successfully used the PPD assessment method in combination with an image-based PPD scoring method to identify and characterize PPD tolerance in 28 cassava cultivars from the Indonesian cassava germplasm. Our analysis showed a significant and positive correlation between PPD score and dry matter content (r = 0.589-0.664, p-value < 0.001). Analysis of additional root parameters showed a significant and positive correlation between PPD scores at 2 days post-harvest (dph) and root length (r = 0.388, p-value < 0.05). Our analysis identified at least 4 cultivars displaying a significantly delayed onset of PPD symptoms as compared to the other selected cultivars. The availability of cassava cultivars contrasting for tolerance to PPD will be particularly instrumental to understanding the molecular mechanisms associated with delayed PPD in cassava roots.
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Affiliation(s)
- Ima M Zainuddin
- Department of Biology, Plant Biotechnology, Eidgenössische Technische Hochschule (ETH) Zurich, Universitätstrasse 2, 8092, Zurich, Switzerland.
- Department of Biosystems, KU Leuven, Willem de Croylaan 42, Box 2455, 3001, Louvain, Belgium.
- Institut Teknologi Bandung (ITB), Jl. Ganesha 10, Bandung, 40132, Indonesia.
- Research Center for Genetics Engineering, National Research and Innovation Agency (BRIN), Jl. Raya Bogor Km. 46, Cibinong, 16911, Indonesia.
| | - Brieuc Lecart
- Plant Genetics, Gembloux Agro-Bio Tech, University of Liège, Passage Des Déportés 2, 5030, Gembloux, Belgium
| | - Enny Sudarmonowati
- Research Center for Genetics Engineering, National Research and Innovation Agency (BRIN), Jl. Raya Bogor Km. 46, Cibinong, 16911, Indonesia
| | - Hervé Vanderschuren
- Department of Biology, Plant Biotechnology, Eidgenössische Technische Hochschule (ETH) Zurich, Universitätstrasse 2, 8092, Zurich, Switzerland.
- Department of Biosystems, KU Leuven, Willem de Croylaan 42, Box 2455, 3001, Louvain, Belgium.
- Plant Genetics, Gembloux Agro-Bio Tech, University of Liège, Passage Des Déportés 2, 5030, Gembloux, Belgium.
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