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He HJ, Wang Y, Wang Y, Al-Maqtari QA, Liu H, Zhang M, Ou X. Towards rapidly quantifying and visualizing starch content of sweet potato [Ipomoea batatas (L.) Lam] based on NIR spectral and image data fusion. Int J Biol Macromol 2023; 242:124748. [PMID: 37164142 DOI: 10.1016/j.ijbiomac.2023.124748] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 04/13/2023] [Accepted: 05/01/2023] [Indexed: 05/12/2023]
Abstract
This study aimed to achieve the rapid quantification and visualization of the starch content in sweet potato via near-infrared (NIR) spectral and image data fusion. The hyperspectral images of the sweet potato samples containing 900-1700 nm spectral information within every pixel were collected. The spectra were preprocessed, analyzed and the 18 informative wavelengths were finally extracted to relate to the measured starch content using the multiple linear regression (MLR) algorithm, producing a good quantitative prediction accuracy with a correlation coefficient of prediction (rP) of 0.970 and a root-mean-square error of prediction (RMSEP) of 0.874 g/100 g by an external validation using a set of dependent samples. The MLR model was further verified in terms of soundness and predictive validity via F-test and t-test, and then transferred to each pixel of the original two dimensional images with the help of a developed algorithm, generating color distribution maps to achieve the vivid visualization of the starch distribution. The study demonstrated that the fusion of the NIR spectral and image data provided a good strategy for the rapidly and nondestructively monitoring the starch content of sweet potato. This technique can be applied to industrial use in the future.
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Affiliation(s)
- Hong-Ju He
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China; School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637459, Singapore
| | - Yuling Wang
- School of Life Science & Technology, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Yangyang Wang
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Qais Ali Al-Maqtari
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Hongjie Liu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Mian Zhang
- School of Life Science & Technology, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Xingqi Ou
- School of Life Science & Technology, Henan Institute of Science and Technology, Xinxiang 453003, China.
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2
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Sapakhova Z, Raissova N, Daurov D, Zhapar K, Daurova A, Zhigailov A, Zhambakin K, Shamekova M. Sweet Potato as a Key Crop for Food Security under the Conditions of Global Climate Change: A Review. PLANTS (BASEL, SWITZERLAND) 2023; 12:2516. [PMID: 37447081 DOI: 10.3390/plants12132516] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023]
Abstract
Sweet potato is one of the most economically important crops for addressing global food security and climate change issues, especially under conditions of extensive agriculture, such as those found in developing countries. However, osmotic stress negatively impacts the agronomic and economic productivity of sweet potato cultivation by inducing several morphological, physiological, and biochemical changes. Plants employ many signaling pathways to respond to water stress by modifying their growth patterns, activating antioxidants, accumulating suitable solutes and chaperones, and making stress proteins. These physiological, metabolic, and genetic modifications can be employed as the best indicators for choosing drought-tolerant genotypes. The main objective of sweet potato breeding in many regions of the world, especially those affected by drought, is to obtain varieties that combine drought tolerance with high yields. In this regard, the study of the physiological and biochemical features of certain varieties is important for the implementation of drought resistance measures. Adapted genotypes can be selected and improved for particular growing conditions by using suitable tools and drought tolerance-related selection criteria. By regulating genetics in this way, the creation of drought-resistant varieties may become cost-effective for smallholder farmers. This review focuses on the drought tolerance mechanisms of sweet potato, the effects of drought stress on its productivity, its crop management strategies for drought mitigation, traditional and molecular sweet potato breeding methods for drought tolerance, and the use of biotechnological methods to increase the tolerance of sweet potato to drought.
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Affiliation(s)
- Zagipa Sapakhova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Nurgul Raissova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Dias Daurov
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Kuanysh Zhapar
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Ainash Daurova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Andrey Zhigailov
- M. Aitkhozhin Institute of Molecular Biology and Biochemistry, Almaty 050012, Kazakhstan
| | - Kabyl Zhambakin
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Malika Shamekova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
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Xiang W, Li K, Dong F, Zhang Y, Zeng Q, Jiang L, Zhang D, Huang Y, Xiao L, Zhang Z, Zhang C. Development of a multicriteria decision-making model for evaluating hybrid offspring in the sweetpotato ( Ipomoea batatas L.) breeding process. BREEDING SCIENCE 2023; 73:246-260. [PMID: 37840976 PMCID: PMC10570886 DOI: 10.1270/jsbbs.22096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 02/13/2023] [Indexed: 10/17/2023]
Abstract
Sweetpotato variety breeding is always a long process. Screening of hybrid offspring is dominated by empirical judgment in this process. Data analysis and decision fatigue have been troubling breeders. In recent years, the low-efficiency screening mode has been unable to meet the requirements of sweetpotato germplasm innovation. Therefore, it is necessary to construct a high-efficiency method that can screen germplasms for different usages, for mining elite genotypes, and to create dedicated sweetpotato varieties. In this article, the multicriteria decision-making (MCDM) model was constructed based on six agronomic traits, including fresh root yield, vine length, vine diameter, branch number, root number and the spatial distribution of storage roots, and five quality traits, including dry matter content, marketable root yield, uniformity of roots, starch content and the edible quality score. Among these, the edible quality score was calculated by using fuzzy comprehensive evaluation to integrate the sensory scores of color, odor, sweetness, stickiness and fibrous taste. The MCDM model was compared with the traditional screening method via an evaluation in 25 sweetpotato materials. The interference of subjective factors on the evaluation results was significantly reduced. The MCDM model is more overall, more accurate and faster than the traditional screening method in the selection of elite sweetpotato materials. It could be programmed to serve the breeders in combination with the traditional screening method.
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Affiliation(s)
- Wei Xiang
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, PR China
| | - Kailong Li
- Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, PR China
| | - Fang Dong
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, PR China
| | - Ya Zhang
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, PR China
| | - Qiang Zeng
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, PR China
| | - Ling Jiang
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, PR China
| | - Daowei Zhang
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, PR China
| | - Yanlan Huang
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, PR China
| | - Liang Xiao
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, Hunan, PR China
| | - Zhuo Zhang
- Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, PR China
| | - Chaofan Zhang
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, PR China
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Tadda SA, Li C, Ding J, Li J, Wang J, Huang H, Fan Q, Chen L, He P, Ahiakpa JK, Karikari B, Chen X, Qiu D. Integrated metabolome and transcriptome analyses provide insight into the effect of red and blue LEDs on the quality of sweet potato leaves. FRONTIERS IN PLANT SCIENCE 2023; 14:1181680. [PMID: 37324670 PMCID: PMC10266350 DOI: 10.3389/fpls.2023.1181680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/02/2023] [Indexed: 06/17/2023]
Abstract
Red and blue light-emitting diodes (LEDs) affect the quality of sweet potato leaves and their nutritional profile. Vines cultivated under blue LEDs had higher soluble protein contents, total phenolic compounds, flavonoids, and total antioxidant activity. Conversely, chlorophyll, soluble sugar, protein, and vitamin C contents were higher in leaves grown under red LEDs. Red and blue light increased the accumulation of 77 and 18 metabolites, respectively. Alpha-linoleic and linolenic acid metabolism were the most significantly enriched pathways based on Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses. A total of 615 genes were differentially expressed between sweet potato leaves exposed to red and blue LEDs. Among these, 510 differentially expressed genes were upregulated in leaves grown under blue light compared with those grown under red light, while the remaining 105 genes were expressed at higher levels in the latter than in the former. Among the KEGG enrichment pathways, blue light significantly induced anthocyanin and carotenoid biosynthesis structural genes. This study provides a scientific reference basis for using light to alter metabolites to improve the quality of edible sweet potato leaves.
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Affiliation(s)
- Shehu A. Tadda
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
- Department of Agronomy, Federal University Dutsin-Ma, Katsina, Nigeria
- Agriculture Research Group, Organization of African Academic Doctors (OAAD), Nairobi, Kenya
| | - Chengyue Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jintao Ding
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jian’an Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jingjing Wang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Huaxing Huang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Quan Fan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lifang Chen
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Pengfei He
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - John K. Ahiakpa
- Agriculture Research Group, Organization of African Academic Doctors (OAAD), Nairobi, Kenya
| | - Benjamin Karikari
- Agriculture Research Group, Organization of African Academic Doctors (OAAD), Nairobi, Kenya
- Department of Agricultural Biotechnology, University for Development Studies, Tamale, Ghana
| | - Xuanyang Chen
- College of Agriculture, Fujian Agriculture, and Forestry University, Fuzhou, China
- Key Laboratory of Crop Biotechnology, Fujian Agriculture and Forestry University, Fujian Province Universities, Fuzhou, China
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
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Pickering K, Pearce T, Manuel L, Doran B, Smith TF. Socio-ecological challenges and food security in the 'salad bowl' of Fiji, Sigatoka Valley. REGIONAL ENVIRONMENTAL CHANGE 2023; 23:61. [PMID: 37033698 PMCID: PMC10074355 DOI: 10.1007/s10113-023-02059-6] [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: 11/23/2022] [Accepted: 03/18/2023] [Indexed: 06/09/2023]
Abstract
This article examines food security in the Sigatoka Valley, one of the most productive food regions in Fiji, in the context of recent socio-ecological challenges through a case study of Narewa village. Data were collected using semi-structured interviews (n = 25), a fixed question food insecurity experience survey (n = 25), and a free listing exercise about preferred and consumed foods (n = 24). Results revealed that while most households had access to sufficient food, the increased frequency and intensity of droughts, tropical cyclones, and flooding caused almost half to worry about meeting their future food needs. To date, a culture of sharing within the village has helped most households access food but this will likely be inadequate to meet future needs as climate change is projected to impact food production. Given that the foundation of food production in Narewa, like other villages in the valley, relies on the long-term viability of agricultural systems, better focus needs to be placed on the natural resources that form the backbone of these systems such as water availability, soil health, and slope stability and their resilience to anthropogenic and natural stressors. Efforts that focus on protecting and enhancing local ecosystems in light of expected future climate change, combined with greater attention on food storage and the use of resilient crops, and enhancing social cohesion and sharing networks are needed to avoid breaching tipping points in the food system.
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Affiliation(s)
- Kerrie Pickering
- Sustainability Research Centre, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD 4556 Australia
- Environmental Sustainability Research Centre, Brock University, St. Catharines, Canada
| | - Tristan Pearce
- Sustainability Research Centre, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD 4556 Australia
- Department of Geography, Earth, and Environmental Sciences, University of Northern British Columbia, 3333 University Way, Prince George, BC 42N 4Z9 Canada
| | - Lui Manuel
- Department of Environment, Nadroga-Navosa Provincial Council, Talenavuruvuru, Lawaqa, P.O. Box 267, Sigatoka, Fiji
| | - Brendan Doran
- Sustainability Research Centre, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD 4556 Australia
| | - Timothy F. Smith
- Sustainability Research Centre, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD 4556 Australia
- Environmental Sustainability Research Centre, Brock University, St. Catharines, Canada
- SWEDESD, Department of Children and Women’s Health, Uppsala University, Uppsala, Sweden
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Khan MA, Kumar S, Wang Q, Wang M, Fahad S, Nizamani MM, Chang K, Khan S, Huang Q, Zhu G. Influence of polyvinyl chloride microplastic on chromium uptake and toxicity in sweet potato. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 251:114526. [PMID: 36634477 DOI: 10.1016/j.ecoenv.2023.114526] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/06/2023] [Accepted: 01/07/2023] [Indexed: 06/17/2023]
Abstract
The extensive use of plastic products and rapid industrialization have created a universal concern about microplastics (MPs). MPs can pose serious environmental risks when combined with heavy metals. However, current research on the combined effects of MPs and hexavalent chromium [Cr(VI)] on plants is insufficient. Herein, a 14-day hydroponic experiment was conducted to investigate the impact of PVC MPs (100 and 200 mg/L) and Cr(VI) (5, 10, and 20 μM) alone and in combination on sweet potato. Results showed that combined Cr(VI) and PVC MPs affected plant growth parameters significantly, but PVC MPs alone did not. The combined application of PVC MPs and Cr(VI) resulted in a decrease in plant height (24-65%), fresh biomass per plant (36-71%), and chlorophyll content (16-34%). Cr(VI) bioaccumulation increased with the increase in its doses, with the highest concentration of Cr(VI) in the leaves (16.45 mg/kg), stems (13.81 mg/kg), and roots (236.65 mg/kg). Cr(VI) and PVC MPs-induced inhibition varied with Cr(VI) and PVC MPs doses. Osmolytes and antioxidants, lipid peroxidation, and H2O2 contents were significantly increased, while antioxidant enzymes except CAT were decreased with increasing Cr(VI) concentration alone and mixed treatments. The presence of PVC MPs promoted Cr(VI) accumulation in sweet potato plants, which clearly showed severe toxic effects on their physio-biochemical characteristics, as indicated by a negative correlation between Cr(VI) concentration and these parameters. PVC MPs alone did not significantly inhibit these parameters. The findings of this study provide valuable implications for the proper management of PVC MPs and Cr(VI) in sweet potato plants.
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Affiliation(s)
- Muhammad Amjad Khan
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province/Center for Eco-Environmental Restoration Engineering of Hainan Province/College of Ecology & Environment/State Key Laboratory of Marine Resource Utilization in South China Sea/Key Laboratory for Environmental Toxicology of Haikou/Key Laboratory of Advanced Materials of Tropical Island Resources/Key Laboratory for Sustainable Utilization of Tropical Bioresources, Hainan University, Haikou, Hainan, 570228, China; Department of Environmental Sciences, University of Peshawar, Khyber Pakhtunkhwa, Peshawar 25120, Pakistan
| | - Sunjeet Kumar
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou 570228, China
| | - Qingqing Wang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province/Center for Eco-Environmental Restoration Engineering of Hainan Province/College of Ecology & Environment/State Key Laboratory of Marine Resource Utilization in South China Sea/Key Laboratory for Environmental Toxicology of Haikou/Key Laboratory of Advanced Materials of Tropical Island Resources/Key Laboratory for Sustainable Utilization of Tropical Bioresources, Hainan University, Haikou, Hainan, 570228, China
| | - Mengzhao Wang
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou 570228, China
| | - Shah Fahad
- Department of Agronomy, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa 23200, Pakistan
| | - Mir Muhammad Nizamani
- Department of Plant Pathology, Agriculture College, Guizhou University, Guiyang 550025, China
| | - Kenlin Chang
- Institute of Environmental Engineering, National Sun Yat-Sen University/ Department of Public Health, College of Health Sciences, Kaohsiung Medical University, Kaohsiung 804, Taiwan
| | - Sardar Khan
- Department of Environmental Sciences, University of Peshawar, Khyber Pakhtunkhwa, Peshawar 25120, Pakistan
| | - Qing Huang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province/Center for Eco-Environmental Restoration Engineering of Hainan Province/College of Ecology & Environment/State Key Laboratory of Marine Resource Utilization in South China Sea/Key Laboratory for Environmental Toxicology of Haikou/Key Laboratory of Advanced Materials of Tropical Island Resources/Key Laboratory for Sustainable Utilization of Tropical Bioresources, Hainan University, Haikou, Hainan, 570228, China.
| | - Guopeng Zhu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou 570228, China.
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Kumar S, Wang M, Fahad S, Qayyum A, Chen Y, Zhu G. Chromium Induces Toxicity at Different Phenotypic, Physiological, Biochemical, and Ultrastructural Levels in Sweet Potato ( Ipomoea batatas L.) Plants. Int J Mol Sci 2022; 23:13496. [PMID: 36362283 PMCID: PMC9656234 DOI: 10.3390/ijms232113496] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/27/2022] [Accepted: 10/31/2022] [Indexed: 10/23/2023] Open
Abstract
Crop productivity is enormously exposed to different environmental stresses, among which chromium (Cr) stress raises considerable concerns and causes a serious threat to plant growth. This study explored the toxic effect of Cr on sweet potato plants. Plants were hydroponically grown, and treatments of 0, 25, 50, 100, and 200 µM Cr were applied for seven days. This study exhibited that a low level of Cr treatment (25 µM) enhanced the growth, biomass, photosynthesis, osmolytes, antioxidants, and enzyme activities. However, significant deleterious effects in growth, biomass, photosynthetic attributes, antioxidants, and enzymes were observed at higher levels of Cr treatment. The remarkable reduction in plant growth traits was associated with the over-accumulation of H2O2 and MDA contents (410% and 577%, respectively) under the highest rate of Cr (200 µM). Under 200 µM Cr, the uptake in the roots were 27.4 mg kg-1 DW, while in shoots were 11 mg kg-1 DW with the highest translocation rate from root to shoot was 0.40. The results showed that the higher accumulation of Cr negatively correlated with the phenotypic and physiological parameters. It may be proposed that Cr toxicity causes oxidative damage as sustained by augmented lipid peroxidation, reactive oxygen species, and reduced photosynthetic rate, chlorophyll, and stomatal traits. The chloroplastic ultrastructure was damaged, and more apparent damage and size reduction were observed at higher Cr levels. Furthermore, aggregated Cr concentration positively correlates with the increase of osmolytes and superoxide dismutase (SOD) activity in the leaves of sweet potato. Moreover, improved osmolytes and SOD do not help protect sweet potato against high Cr stress. Overall, these findings will improve the understanding of the defense mechanisms of sweet potato to Cr stress.
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Affiliation(s)
- Sunjeet Kumar
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou 570228, China
| | - Mengzhao Wang
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou 570228, China
| | - Shah Fahad
- Department of Agronomy, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Abdul Qayyum
- Department of Agronomy, The University of Haripur, Haripur 22620, Pakistan
| | - Yanli Chen
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou 570228, China
| | - Guopeng Zhu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou 570228, China
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Holder AJ, Hayes F. Substantial yield reduction in sweet potato due to tropospheric ozone, the dose-response function. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 304:119209. [PMID: 35341818 DOI: 10.1016/j.envpol.2022.119209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/03/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
Impacts of tropospheric ozone on sweet potato (Ipomoea batatas) are poorly understood despite being a staple food grown in locations deemed at risk from ozone pollution. Three varieties of sweet potato were exposed to ozone treatments (peaks of: 30 (Low), 80 (Medium), and 110 (High) ppb) using heated solardomes. Weekly measurements of stomatal conductance (gs) and chlorophyll content (CI) were used to determine physiological responses, along with final yield. gs and CI were reduced with increasing ozone exposure, but effects were partially masked due to elevated leaf senescence and turnover. Yield for the Erato orange and Murasaki varieties was reduced by ∼40% and ∼50% (Medium and High ozone treatments, respectively, vs Low) whereas Beauregard yield was reduced by 58% in both. The DO3SE (Deposition of Ozone for Stomatal Exchange) model was parameterized for gs in response to light, temperature, vapour pressure deficit and soil water potential. Clear responses of gs to the environmental parameters were found. Yield reductions were correlated with both concentration based AOT40 (accumulated ozone above a threshold of 40 ppb) and flux based POD6 (accumulated stomatal flux of ozone above a threshold of 6 nmol m- 2 s- 1) metrics (R2 0.66 p = 0.01; and R2 0.44 p = 0.05, respectively). A critical level estimate of a POD6 of 3 (mmol m-2 Projected Leaf Area-1) was obtained using the relationship. This study showed that sweet potato yield was reduced by ozone pollution, and that stomatal conductance and chlorophyll content were also affected. Results from this study can improve model predictions of ozone impacts on sweet potato together with associated ozone risk assessments for tropical countries.
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Affiliation(s)
- Amanda J Holder
- UK Centre for Ecology & Hydrology, Environment Centre Wales, Deiniol Road, Bangor, LL57 2UW, UK
| | - Felicity Hayes
- UK Centre for Ecology & Hydrology, Environment Centre Wales, Deiniol Road, Bangor, LL57 2UW, UK.
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Food Systems Development: The Necessary Paradigm Shift for a Healthy and Sustainable Agrarian Transition, a Case Study from Bougainville, Papua New Guinea. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19084651. [PMID: 35457529 PMCID: PMC9029559 DOI: 10.3390/ijerph19084651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/04/2022] [Accepted: 04/07/2022] [Indexed: 02/01/2023]
Abstract
Classical agricultural development paradigms prioritise basic requirements such as agronomic, caloric and economic needs for the target environment and for beneficiaries. As challenges associated with climate change, globalisation, and population growth compound and amplify one another, project scope must be broadened to take a holistic food systems approach that includes sociocultural and historical contexts, as well as climate impacts as underpinning project design. In this paper, we illustrate the importance of adopting a food systems development paradigm rather than a classical agricultural development paradigm through a case study in Bougainville, Papua New Guinea. The case uses Rich Picturing, targeted and focus-group interviews, and garden visits in remote Bougainville; it provides a poignant illustration of the importance of this more holistic perspective given the historical inefficacy of food systems development, as well as Papua New Guinea's exposure to a plethora of compounding environmental, social, economic, and political stresses and shocks that demonstrate the important linkages between ecosystem services and health. The study aims to demonstrate how including localised gender dynamics, climate vulnerability, rapidly morphing social norms, and climate analogue environments is critical in building food systems resilience and is key to designing policies, programs, and development projects that more effectively address environmental, sociocultural, and health considerations. Building on the inadequacies in agricultural development efforts previously documented for Papua New Guinea, we propose an improved framing for food systems development and identify areas for future research.
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Impact of climate change on the yield of tropical root and tuber crops vs. rice and potato in India. Food Secur 2021. [DOI: 10.1007/s12571-021-01226-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Vogliano C, Murray L, Coad J, Wham C, Maelaua J, Kafa R, Burlingame B. Progress towards SDG 2: Zero hunger in melanesia – A state of data scoping review. GLOBAL FOOD SECURITY 2021. [DOI: 10.1016/j.gfs.2021.100519] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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12
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Iese V, Wairiu M, Hickey GM, Ugalde D, Hinge Salili D, Walenenea J, Tabe T, Keremama M, Teva C, Navunicagi O, Fesaitu J, Tigona R, Krishna D, Sachan H, Unwin N, Guell C, Haynes E, Veisa F, Vaike L, Bird Z, Ha'apio M, Roko N, Patolo S, Dean AR, Kiran S, Tikai P, Tuiloma J, Halavatau S, Francis J, Ward AC. Impacts of COVID-19 on agriculture and food systems in Pacific Island countries (PICs): Evidence from communities in Fiji and Solomon Islands. AGRICULTURAL SYSTEMS 2021; 190:103099. [PMID: 36567883 PMCID: PMC9759611 DOI: 10.1016/j.agsy.2021.103099] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/26/2021] [Accepted: 02/01/2021] [Indexed: 05/08/2023]
Abstract
CONTEXT COVID-19 mitigation measures including border lockdowns, social distancing, de-urbanization and restricted movements have been enforced to reduce the risks of COVID-19 arriving and spreading across PICs. To reduce the negative impacts of COVID-19 mitigation measures, governments have put in place a number of interventions to sustain food and income security. Both mitigation measures and interventions have had a number of impacts on agricultural production, food systems and dietary diversity at the national and household levels. OBJECTIVE Our paper conducted an exploratory analysis of immediate impacts of both COVID-19 mitigation measures and interventions on households and communities in PICs. Our aim is to better understand the implications of COVID-19 for PICs and identify knowledge gaps requiring further research and policy attention. METHODS To understand the impacts of COVID-19 mitigation measures and interventions on food systems and diets in PICs, 13 communities were studied in Fiji and Solomon Islands in July-August 2020. In these communities, 46 focus group discussions were carried out and 425 households were interviewed. Insights were also derived from a series of online discussion sessions with local experts of Pacific Island food and agricultural systems in August and September 2020. To complement these discussions, an online search was conducted for available literature. RESULTS AND CONCLUSIONS Identified impacts include: 1) Reduced agricultural production, food availability and incomes due to a decline in local markets and loss of access to international markets; 2) Increased social conflict such as land disputes, theft of high-value crops and livestock, and environmental degradation resulting from urban-rural migration; 3) Reduced availability of seedlings, planting materials, equipment and labour in urban areas; 4) Reinvigoration of traditional food systems and local food production; and 5) Re-emergence of cultural safety networks and values, such as barter systems. Households in rural and urban communities appear to have responded positively to COVID-19 by increasing food production from home gardens, particularly root crops, vegetables and fruits. However, the limited diversity of agricultural production and decreased household incomes are reducing the already low dietary diversity score that existed pre-COVID-19 for households. SIGNIFICANCE These findings have a number of implications for future policy and practice. Future interventions would benefit from being more inclusive of diverse partners, focusing on strengthening cultural and communal values, and taking a systemic and long-term perspective. COVID-19 has provided an opportunity to strengthen traditional food systems and re-evaluate, re-imagine and re-localize agricultural production strategies and approaches in PICs.
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Affiliation(s)
- Viliamu Iese
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Morgan Wairiu
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | | | | | - Diana Hinge Salili
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - John Walenenea
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Tammy Tabe
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Milton Keremama
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Chris Teva
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Otto Navunicagi
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Jioje Fesaitu
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Robson Tigona
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | | | | | - Nigel Unwin
- European Centre for Environment and Human Health, University of Exeter; MRC Epidemiology Unit, University of Cambridge, United Kingdom
| | - Cornelia Guell
- European Centre for Environment and Human Health, University of Exeter, United Kingdom
| | - Emily Haynes
- European Centre for Environment and Human Health, University of Exeter, United Kingdom
| | - Filipe Veisa
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Linda Vaike
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Zina Bird
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Michael Ha'apio
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Nasoni Roko
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
| | - Soane Patolo
- Mainstreaming of Rural Development Innovation Tonga Trust, Tonga
| | | | - Sashi Kiran
- Foundation for Rural Integrated Enterprises & Development, Fiji
| | | | | | | | - Judith Francis
- Technical Centre for Agricultural and Rural Cooperation, The Netherlands
| | - Alastair Christopher Ward
- Pacific Centre for Environment and Sustainable Development, The University of the South Pacific, Fiji
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13
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Palanivel H, Shah S. Unlocking the inherent potential of plant genetic resources: food security and climate adaptation strategy in Fiji and the Pacific. ENVIRONMENT, DEVELOPMENT AND SUSTAINABILITY 2021; 23:14264-14323. [PMID: 33619427 PMCID: PMC7888530 DOI: 10.1007/s10668-021-01273-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
Pacific Island Countries (PICs) are the center of origin and diversity for several root, fruit and nut crops, which are indispensable for food security, rural livelihoods, and cultural identity of local communities. However, declining genetic diversity of traditional food crops and high vulnerability to climate change are major impediments for maintaining agricultural productivity. Limited initiatives to achieve food self-sufficiency and utilization of Plant Genetic Resources (PGR) for enhancing resilience of agro-ecosystems are other serious constraints. This review focuses on the visible and anticipated impacts of climate ge, on major food and tree crops in agriculture and agroforestry systems in the PICs. We argue that crop improvement through plant breeding is a viable strategy to enhance food security and climatic resilience in the region. The exploitation of adaptive traits: abiotic and biotic stress tolerance, yield and nutritional efficiency, is imperative in a world threatened by climatic extremes. However, the insular constraints of Fiji and other small PICs are major limitations for the utilization of PGR through high throughput techniques which are also cost prohibitive. Crop Improvement programs should instead focus on the identification, conservation, documentation and dissemination of information on unique landraces, community seed banks, introduction of new resistant genotypes, and sustaining and enhancing allelic diversity.
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Affiliation(s)
- Hemalatha Palanivel
- Department of Biotechnology, College of Biological and Chemical Engineering, Addis Ababa Science and Technology University, PO Box 16417, Addis Ababa, Ethiopia
| | - Shipra Shah
- Department of Forestry, College of Agriculture, Fisheries and Forestry, Koronivia Campus, Fiji National University, PO Box 1544, Nausori, Republic of Fiji
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14
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Li Q, Kuo YW, Lin KH, Huang W, Deng C, Yeh KW, Chen SP. Piriformospora indica colonization increases the growth, development, and herbivory resistance of sweet potato (Ipomoea batatas L.). PLANT CELL REPORTS 2021; 40:339-350. [PMID: 33231729 DOI: 10.1007/s00299-020-02636-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 11/09/2020] [Indexed: 06/11/2023]
Abstract
Piriformospora indica symbiosis promoted the growth and photosynthesis, and simultaneously enhanced the resistance against insect herbivory by regulating sporamin-dependent defense in sweet potato. Piriformospora indica (P. indica), a versatile endophytic fungus, promotes the growth and confers resistance against multiple stresses by root colonization in plant hosts. In this study, the effects of P. indica colonization on the growth, physiological change, and herbivore resistance of leaf-vegetable sweet potato cultivar were investigated. P. indica symbiosis significantly improved the biomass in both above- and under-ground parts of sweet potato plants. In comparison with the non-colonized plants, the content of photosynthetic pigments and the efficiency of photosynthesis were increased in P. indica-colonized sweet potato plants. Further investigation showed that the activity of catalase was enhanced in both leaves and roots of sweet potato plants after colonization, but ascorbate peroxidase, peroxidase, and superoxide dismutase were not enhanced. Furthermore, the interaction between P. indica and sweet potato plants also showed the biological function in jasmonic acid (JA)-mediated defense. The plants colonized by P. indica had greatly increased JA accumulation and defense gene expressions, including IbNAC1, IbbHLH3, IbpreproHypSys, and sporamin, leading to elevated trypsin inhibitory activity, which was consistent with a reduced Spodoptera litura performance when larvae fed on the leaves of P. indica-colonized sweet potato plants. The root symbiosis of P. indica is helpful for the plant promoting growth and development and has a strong function as resistance inducers against herbivore attack in sweet potato cultivation by regulating sporamin-dependent defense.
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Affiliation(s)
- Qing Li
- Sanming Academy of Agricultural Sciences, Sanming, Fujian, China
| | - Yun-Wei Kuo
- Sanming Academy of Agricultural Sciences, Sanming, Fujian, China
| | - Kuan-Hung Lin
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Weiqun Huang
- Fujian Seed General Station, Fuzhou, Fujian, China
| | - Caisheng Deng
- Sanming Academy of Agricultural Sciences, Sanming, Fujian, China
| | - Kai-Wun Yeh
- Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
| | - Shi-Peng Chen
- Sanming Academy of Agricultural Sciences, Sanming, Fujian, China.
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15
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Benefits and Trade-Offs of Smallholder Sweet Potato Cultivation as a Pathway toward Achieving the Sustainable Development Goals. SUSTAINABILITY 2021. [DOI: 10.3390/su13020552] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The 2030 Agenda for Sustainable Development, including the 17 Sustainable Development Goals (SDGs), will shape national development plans up to 2030. SDGs 1 (No Poverty), 2 (Zero Hunger) and 7 (Affordable and Clean Energy) are particularly crucial for the poor, given they target the basic human needs for development and fundamental human rights. The majority of poor and malnourished people in the developing world live in rural areas and engage in farming as a key part of their livelihoods, with food and agriculture at the heart of their development concerns. Crops that can provide both food and energy without detrimental impacts on soil or water resources can be particularly beneficial for local development and smallholder farmers. Sweet potato, in particular, is starting to attract growing attention from researchers and policymakers as it has the potential to address these global problems and promote a sustainable society. We systematically review the literature to assess how sweet potato can support smallholder farmers to make progress towards the SDGs. We find that sweet potato has important untapped potential to advance progress, particularly linked to its versatility as a crop and its multiple end-uses. However, further research is paramount in order to better recognise and harness its potential to address the issues of food, nutrition and energy security in the context of a changing global climate. Further investigation is also needed into the trade-offs that occur in the use of sweet potato to support progress towards the SDGs.
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16
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Brookes DR, Hereward JP, Walter GH, Furlong MJ. Origins, Divergence, and Contrasting Invasion History of the Sweet Potato Weevil Pests Cylas formicarius (Coleoptera: Brentidae) and Euscepes batatae (Coleoptera: Curculionidae) in the Asia-Pacific. JOURNAL OF ECONOMIC ENTOMOLOGY 2019; 112:2931-2939. [PMID: 31352482 DOI: 10.1093/jee/toz198] [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: 02/11/2019] [Indexed: 06/10/2023]
Abstract
Cylas formicarius F. and Euscepes batatae Waterhouse are the most damaging sweet potato insect pests globally. Both weevils are thought to have invaded the Pacific alongside the movement of sweet potato (Ipomoea batatas (L.) Lam. Convolvulaceae), with C. formicarius having originated in India and E. batatae in Central or South America. Here we compare the genetic relationships between populations of the pests, primarily in the Asia-Pacific, to understand better their contemporary population structure and their historical movement relative to that of sweet potato. Cylas formicarius has divergent mitochondrial lineages that indicate a more complex biogeographic and invasive history than is presently assumed for this insect, suggesting it was widespread across the Asia-Pacific before the arrival of sweet potato. Cylas formicarius must have originally fed on Ipomoea species other than I. batatas but the identity of these species is presently unknown. Cylas formicarius was formerly designated as three species or subspecies and the genetic data presented here suggests that these designations should be reinvestigated. Euscepes batatae has very low genetic diversity which is consistent with its historical association with sweet potato and a recent introduction to the Asia-Pacific from the Americas. The distribution of E. batatae may be narrower than that of C. formicarius in the Asia-Pacific because it has relied relatively more on human-assisted movement. Consequently, E. batatae may become more widespread in the future. Investigating the invasion history of both species will help to understand the probability and nature of future invasions.
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Affiliation(s)
- Dean R Brookes
- School of Biological Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - James P Hereward
- School of Biological Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Gimme H Walter
- School of Biological Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Michael J Furlong
- School of Biological Sciences, The University of Queensland, Brisbane, Queensland, Australia
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