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Coelho C, Fagundes da Silva J, Stilwell G. Suspected intoxication by Kikuyu grass ( Cenchrus clandestinus) of dairy cattle in the Azores, Portugal. N Z Vet J 2024; 72:155-161. [PMID: 38438184 DOI: 10.1080/00480169.2024.2319101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 02/01/2024] [Indexed: 03/06/2024]
Abstract
CASE HISTORY An outbreak of suspected Kikuyu grass (Cenchrus clandestinus) intoxication among dairy cattle occurred on the island of Terceira in the Azores (Portugal), in October 2022. The animals affected were non-lactating dairy cows and heifers from five small farms grazing (free or tethered) a Kikuyu-dominant pasture. Of the 29 animals exposed, 17 were affected, and eight (five heifers and three adult cows) died, resulting in a morbidity rate of 58%, a mortality rate of 28% and a case mortality rate of 47%. CLINICAL FINDINGS AND TREATMENT The clinical signs were non-specific and inconsistent, and included dry faeces, some with dark red blood; apathy and prostration; abdominal dilatation; tachycardia; tachypnoea; pale or jaundiced mucous membranes; sham drinking; sialorrhoea; and moderate to severe dehydration. Symptomatic treatment was provided but was ineffective. Haematology and serum biochemistry revealed an acute inflammatory leukogram, increased alkaline phosphatase (ALP) activity, decreased gamma-glutamyl transferase (GGT) activity, and azotaemia.The most consistent necropsy findings were haemorrhages in the epicardium and endocardium, an enlarged liver with rounded edges, non-perforated abomasal ulcers, and haemorrhagic lesions in the small and large intestines. Histopathology indicated myocarditis, hepatitis, interstitial nephritis, enteritis and colitis.Several fungal species were isolated from grass samples taken from affected pastures including several Fusarium spp., the genus implicated in Kikuyu toxicosis. Immediate removal of the animals from the pasture with Kikuyu was the only measure that prevented new cases and resulted in the recovery of some of the less affected animals. DIAGNOSIS The epidemiological features of this outbreak and the clinical signs and micro- and macroscopic lesions observed were highly suggestive of Kikuyu grass poisoning. CLINICAL RELEVANCE Although the weather conditions varied from other published cases, the grazing conditions (almost exclusive Kikuyu grass) and the post-mortem findings were very similar to those described in the literature, particularly the haemorrhages in the epicardium and endocardium. Kikuyu grass is very invasive and presents many desirable characteristics as cattle feed. Thus, an increase in cases of intoxication may be expected. Practitioners and farmers in areas where Kikuyu grass is abundant should be aware of the potential risks of grazing cattle exclusively on these pastures. They should also be aware of the early and subtle signs of Kikuyu intoxication to allow for timely removal of the animals from pasture.
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Affiliation(s)
- C Coelho
- Animal Behaviour and Welfare Laboratory, Centre of Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- Secção de Assistência Veterinária, Unicol - Cooperativa Agrícola, CRL, Angra do Heroísmo, Portugal
| | - J Fagundes da Silva
- Secção de Assistência Veterinária, Unicol - Cooperativa Agrícola, CRL, Angra do Heroísmo, Portugal
| | - G Stilwell
- Animal Behaviour and Welfare Laboratory, Centre of Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Faculty of Veterinary Medicine Faculty, University of Lisbon, Lisbon, Portugal
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Salvatore MM, Russo MT, Meyer S, Tuzi A, Della Greca M, Masi M, Andolfi A. Screening of Secondary Metabolites Produced by Nigrospora sphaerica Associated with the Invasive Weed Cenchrus ciliaris Reveals Two New Structurally Related Compounds. Molecules 2024; 29:438. [PMID: 38257350 PMCID: PMC10818434 DOI: 10.3390/molecules29020438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/09/2024] [Accepted: 01/13/2024] [Indexed: 01/24/2024] Open
Abstract
In the search for new alternative biocontrol strategies, phytopathogenic fungi could represent a new frontier for weed management. In this respect, as part of our ongoing work aiming at using fungal pathogens as an alternative to common herbicides, the foliar pathogen Nigrospora sphaerica has been evaluated to control buffelgrass (Cenchrus ciliaris). In particular, in this work, the isolation and structural elucidation of two new biosynthetically related metabolites, named nigrosphaeritriol (3-(hydroxymethyl)-2-methylpentane-1,4-diol) and nigrosphaerilactol (3-(1-hydroxyethyl)-4-methyltetrahydrofuran-2-ol), from the phytotoxic culture filtrate extract were described, along with the identification of several known metabolites. Moreover, the absolute stereochemistry of (3R,4S,5S)-nigrosphaerilactone, previously reported as (3S,4R,5R)-4-hydroxymethyl-3,5-dimethyldihydro-2-furanone, was determined for the first time by X-ray diffraction analysis. Considering their structural relationship, the determination of the absolute stereochemistry of nigrosphaerilactone allowed us to hypothesize the absolute stereochemistry of nigrosphaeritriol and nigrosphaerilactol.
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Affiliation(s)
- Maria Michela Salvatore
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy; (M.M.S.); (M.T.R.); (A.T.); (M.D.G.); (A.A.)
| | - Maria Teresa Russo
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy; (M.M.S.); (M.T.R.); (A.T.); (M.D.G.); (A.A.)
| | - Susan Meyer
- Department of Geosciences, Southern Utah University, Cedar City, UT 84721, USA;
| | - Angela Tuzi
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy; (M.M.S.); (M.T.R.); (A.T.); (M.D.G.); (A.A.)
| | - Marina Della Greca
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy; (M.M.S.); (M.T.R.); (A.T.); (M.D.G.); (A.A.)
| | - Marco Masi
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy; (M.M.S.); (M.T.R.); (A.T.); (M.D.G.); (A.A.)
- BAT Center-Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, University of Naples Federico II, 80055 Portici, Italy
| | - Anna Andolfi
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy; (M.M.S.); (M.T.R.); (A.T.); (M.D.G.); (A.A.)
- BAT Center-Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, University of Naples Federico II, 80055 Portici, Italy
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Floriano da Silva LC, Vinhas Ítavo LC, Martins Santos R, Brandão Ferreira Ítavo CC, Zirondi Longhini V, Menezes Dias A, dos Santos Difante G, Moreira Arcanjo AH, Santos Santana JC, Gurgel ALC, de Oliveira Scarpino van Cleef F. Urban sewage sludge stabilization by alkalization-composting-vermicomposting process: Crop-livestock residue use. PLoS One 2023; 18:e0289362. [PMID: 37676872 PMCID: PMC10484420 DOI: 10.1371/journal.pone.0289362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 07/17/2023] [Indexed: 09/09/2023] Open
Abstract
Waste management practices are vital for human health and the environment in a world where natural resources stress is expected to increase with the growth of population. Our study aimed to evaluate the potential use of crop-livestock residue as a bulking agent associated with the ideal level of hydrated lime for the stabilization and sanitization of urban sewage sludge through the alkalization-composting process. Therefore, we determined the alkalization efficiency on the heavy metal concentration in urban sewage sludge, quantified the viable eggs of helminths in pure and alkalized sludge, and measured the rate of earthworms (Eisenia fetida) surviving in the vermicomposting process using different levels of alkalized urban sewage sludge associated with crop-livestock residue. Four sequential trials were carried out in a completely randomized design with three replicates. The lime alkalization reduced the levels of Ba, As, Pb, Cu, Cr, Mo, Ni, and Zn compared to the pure urban sewage sludge. Using 30% w/w of lime in the urban sewage sludge (SS-30) for composting process reduced the viable helminth eggs by 71, 72, and 69% for sugarcane bagasse (Saccharum officinarum; SB), fresh chopped Napier-grass (Pennisetum purpureum; NG), and bovine ruminal content (BR), respectively. The ideal level of hydrated lime for stabilization and sanitization of urban sewage sludge was found to be 30%, which was able to reduce the heavy metals. The residues have the potential as a bulking agent for the composting of urban sewage sludge when associated with alkalization. The lime alkalization decreases the total number of helminth eggs and the number of viable eggs. The possibility of starting a vermicomposting using the mixtures is promising, evidenced by the earthworm survival in composting urban sewage sludge mixed with crop-livestock residues after 45 days of composting. The earthworm survival is maintained by an association of at least 80% of the crop-livestock residues.
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Affiliation(s)
| | - Luís Carlos Vinhas Ítavo
- College of Veterinary Medicine and Animal Science (FAMEZ), Federal University of Mato Grosso do Sul (UFMS), Campo Grande, Brazil
| | | | | | - Vanessa Zirondi Longhini
- College of Veterinary Medicine and Animal Science (FAMEZ), Federal University of Mato Grosso do Sul (UFMS), Campo Grande, Brazil
| | - Alexandre Menezes Dias
- College of Veterinary Medicine and Animal Science (FAMEZ), Federal University of Mato Grosso do Sul (UFMS), Campo Grande, Brazil
| | - Gelson dos Santos Difante
- College of Veterinary Medicine and Animal Science (FAMEZ), Federal University of Mato Grosso do Sul (UFMS), Campo Grande, Brazil
| | - Angelo Herbet Moreira Arcanjo
- College of Veterinary Medicine and Animal Science (FAMEZ), Federal University of Mato Grosso do Sul (UFMS), Campo Grande, Brazil
| | - Juliana Caroline Santos Santana
- College of Veterinary Medicine and Animal Science (FAMEZ), Federal University of Mato Grosso do Sul (UFMS), Campo Grande, Brazil
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Muktar MS, Bizuneh T, Anderson W, Assefa Y, Negawo AT, Teshome A, Habte E, Muchugi A, Feyissa T, Jones CS. Analysis of global Napier grass ( Cenchrus purpureus) collections reveals high genetic diversity among genotypes with some redundancy between collections. Sci Rep 2023; 13:14509. [PMID: 37667017 PMCID: PMC10477186 DOI: 10.1038/s41598-023-41583-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/29/2023] [Indexed: 09/06/2023] Open
Abstract
Genetic diversity amongst genotypes of several Napier grass collections was analyzed and compared with the diversity in a set of open pollinated progeny plants. A total of 114,881 SNP and 46,293 SilicoDArT genome-wide markers were generated on 574 Napier grass genotypes. Of these, 86% of the SNP and 66% of the SilicoDArT markers were mapped onto the fourteen chromosomes of the Napier grass genome. For genetic diversity analysis, a subset of highly polymorphic and informative SNP markers was filtered using genomic position information, a maximum of 10% missing values, a minimum minor allele frequency of 5%, and a maximum linkage-disequilibrium value of 0.5. Extensive genetic variation, with an average Nei's genetic distance value of 0.23, was identified in the material. The genotypes clustered into three major and eleven sub-clusters with high levels of genetic variation contained both within (54%) and between (46%) clusters. However, we found that there was low to moderate genetic differentiation among the collections and that some overlap and redundancy occurred between collections. The progeny plants were genetically diverse and divergent from the germplasm collections, with an average FST value of 0.08. We also reported QTL regions associated with forage biomass yield based on field phenotype data measured on a subset of the Napier grass collections. The findings of this study offer useful information for Napier grass breeding strategies, enhancement of genetic diversity, and provide a guide for the management and conservation of the collections.
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Affiliation(s)
- Meki S Muktar
- Feed and Forage Development, International Livestock Research Institute, Addis Ababa, Ethiopia
| | - Tadelech Bizuneh
- Ethiopian Institute of Agricultural Research, Holeta Agricultural Research Centre, Holeta, Ethiopia
| | - William Anderson
- Crop Genetics and Breeding Research Unit, USDA-ARS, 115 Coastal Ways, Tifton, GA, 31793, USA
| | - Yilikal Assefa
- Feed and Forage Development, International Livestock Research Institute, Addis Ababa, Ethiopia
| | - Alemayehu T Negawo
- Feed and Forage Development, International Livestock Research Institute, Addis Ababa, Ethiopia
| | - Abel Teshome
- Feed and Forage Development, International Livestock Research Institute, Addis Ababa, Ethiopia
| | - Ermias Habte
- Feed and Forage Development, International Livestock Research Institute, Addis Ababa, Ethiopia
| | - Alice Muchugi
- Feed and Forage Development, International Livestock Research Institute, Addis Ababa, Ethiopia
| | - Tileye Feyissa
- Institute of Biotechnology, College of Natural Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Chris S Jones
- Feed and Forage Development, International Livestock Research Institute, Nairobi, Kenya.
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Nawaz I, Tahir A, Iqbal SM, Anjum F, Naseem M, Aslam MI, Hussain M, Jamil QA, Shirazi JH, Jamil Q. Anti-inflammatory, anti-nociceptive and anti-pyretic activities of Cenchrus ciliaris L. J Ethnopharmacol 2023; 309:116332. [PMID: 36868441 DOI: 10.1016/j.jep.2023.116332] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cenchrus ciliaris L. belongs to the family Poaceae and is found all over the world. It is native to the Cholistan desert of Pakistan where it is locally known as 'Dhaman'. Owing to high nutritional value, C. ciliaris is used as fodder while seeds are used for bread making which are consumed by locals. It also possesses medicinal value and is extensively employed to treat pain, inflammation, urinary tract infection, and tumors. AIM OF STUDY Studies on the pharmacological activities of C. ciliaris are scarce in spite of its several traditional uses. To the best of our knowledge, no comprehensive study has been conducted on anti-inflammatory, analgesic and anti-pyretic activity of C. ciliaris until now. Here we employed an integrative phytochemical and in - vivo framework to evaluate the potential biological activities of C. ciliaris against inflammation, nociception and pyrexia experimentally induced in rodents. MATERIAL AND METHODS C. ciliaris was collected from the desert of Cholistan, Bahawalpur, Pakistan. Phytochemical profiling of C. ciliaris was done by employing GC-MS analysis. Anti-inflammatory activity of plant extract was initially determined by various in - vitro assays including albumin denaturation assay and RBC membrane stabilization assays. Finally, rodents were utilized to evaluate in - vivo anti-inflammatory, antipyretic and anti-nociceptive activities. RESULTS Our data revealed the presence of 67 phytochemicals in methanolic extract of C. ciliaris. The methanolic extract of C. ciliaris provided RBC membrane stabilization by 65.89 ± 0.32% and protection against albumin denaturation by 71.91 ± 3.42% at 1 mg/ml concentration. In in - vivo acute inflammatory models, C. ciliaris exhibited 70.33 ± 1.03, 62.09 ± 8.98, 70.24 ± 0.95% anti-inflammatory activity at concentration of 300 mg/ml against carrageenan, histamine and serotonin induced inflammation. In CFA induced arthritis, inhibition of inflammation was found to be 48.85 ± 5.11% at 300 mg/ml dose after 28 days of treatment. In anti-nociceptive assays C. ciliaris exhibited significant analgesic activity in both peripheral and centrally mediated pain. The C. ciliaris also reduced the temperature by 75.26 ± 1.41% in yeast induced pyrexia. CONCLUSION C. ciliaris exhibited anti-inflammatory effect against acute and chronic inflammation. It also showed significant anti-nociceptive and anti-pyretic activity which endorses its traditional use in the management of pain and inflammatory disorders.
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Affiliation(s)
- Iqra Nawaz
- Department of Pharmacology, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Ayma Tahir
- Department of Pharmacology, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Shahid Muhammad Iqbal
- Department of Pharmacology, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Fayyaz Anjum
- Department of Pharmacology, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Mahrukh Naseem
- Department of Zoology, University of Balochistan, Quetta, 87550, Pakistan.
| | - Muhammad Irfan Aslam
- Department of Pharmacology, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Musaddique Hussain
- Department of Pharmacology, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Qazi Adnan Jamil
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Jafir Hussain Shirazi
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - QurratUlAin Jamil
- Department of Pharmacy Practice, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
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Kang DJ, Tazoe H. Effect of drought stress or soil pH on cesium accumulation in Napier grass. Environ Monit Assess 2022; 195:193. [PMID: 36512137 DOI: 10.1007/s10661-022-10817-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Radio-cesium (Cs) decontamination efficiency by plants is supposedly affected by environmental conditions. To elucidate the factors influencing the unstable 137Cs-decontamination efficiency, we first examined the influence of drought or soil pH on Cs accumulation using cesium-133 (133Cs) using Napier grass (Pennisetum purpureum Schum.) grown under pot conditions. The experiment was performed on three different conditions with 150 µM 133Cs applied to soil: low pH (L-pH, pH = 5.6 ± 0.0), near-neutral pH (N-pH, pH = 6.6 ± 0.1), and the combination of low pH and drought stress (Drought). Drought stress had prominent negative effects on plant height, aboveground dry matter weight (DWabove), 133Cs concentrations in aboveground or root (Csabove or Csroot) parts, or 133Cs total content in the part aboveground (Cs-T). 133Cs concentration and total content in Drought conditions were reduced by 44.1% and 60.0% aboveground and 63.6% and 66.0% in root parts compared with counterpart normal soil moisture conditions (L-pH), respectively. Conversely, there were no significant effects of soil pH on Csabove, Csroot, or Cs-T in L-pH and N-pH conditions. Chlorophyll fluorescence parameters (Fv/Fm, Fv/F0) and the temperature in leaves were negatively affected by drought stress or soil pH conditions. From our results, drought strongly influenced plant growth and Cs accumulation in plants compared with soil acidity. Therefore, soil moisture appears to be a significant factor in maintaining 137Cs-decontamination efficiency by Napier grass.
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Affiliation(s)
- Dong-Jin Kang
- Teaching and Research Center for Bio-coexistence, Faculty of Agriculture and Life Science, Hirosaki University, Goshogawara, 037-0202, Japan.
| | - Hirofumi Tazoe
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, 036-8564, Japan
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Li Y, Li S, Feng Q, Zhang J, Han X, Zhang L, Yang F, Zhou J. Effects of exogenous Strigolactone on the physiological and ecological characteristics of Pennisetum purpureum Schum. Seedlings under drought stress. BMC Plant Biol 2022; 22:578. [PMID: 36510126 PMCID: PMC9743734 DOI: 10.1186/s12870-022-03978-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 12/03/2022] [Indexed: 05/31/2023]
Abstract
BACKGROUND Drought is one of the main environmental factors limiting plant growth and development. Pennisetum purpureum Schum. was used to explore the mitigation effects of exogenous strigolactone (SL) on drought stress during the seedling stage. The effects of different concentrations (1, 3, 5, and 7 μmol·L- 1) of SL on the photosynthesis characteristics, growth performance, and endogenous abscisic acid (ABA) of P. purpureum under drought stress were studied. RESULTS Exogenous SL could effectively alleviate the inhibitory effect of drought stress on P. purpureum growth. Compared with drought stress, the net photosynthesis rate, stomatal conductance, transpiration rate, and water-use efficiency of the leaves of P. purpureum after SL treatment significantly increased, thereby exerting a significant mitigation effect on the decrease in photosystem II maximum photochemical efficiency and the performance index based on light absorption caused by drought. Moreover, the exogenous application of SL can effectively increase the fresh and dry weight of the leaves and roots and the main-root length. After applying SL for 120 h, the ABA content of P. purpureum decreased significantly. The activity of key enzymes of photosynthesis significantly increased after 48 h of external application of SL to P. purpureum. CONCLUSIONS SL treatment can improve the photosynthesis performance of P. purpureum leaves under drought conditions and increase the antioxidant capacity of the leaves, thereby reducing the adverse effects of drought, promoting the growth of P. purpureum, and effectively improving the drought resistance of P. purpureum.
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Affiliation(s)
- Yan Li
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- National Engineering Research Center of Juncao Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Sutao Li
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- National Engineering Research Center of Juncao Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Qixian Feng
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Juan Zhang
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Xuelin Han
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Lei Zhang
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Fulin Yang
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
| | - Jing Zhou
- National Engineering Research Center of Juncao Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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Marín Gómez A, Laca EA, Baldissera TC, Pinto CE, Garagorry FC, Zubieta AS, Bremm C, Bindelle J, Carvalho PCDF. Determining the pre-grazing sward height of Kikuyu grass (Cenchrus clandestinus - Hochst. ex Chiov.) for optimizing nutrient intake rate of dairy heifers. PLoS One 2022; 17:e0269716. [PMID: 35802612 PMCID: PMC9269382 DOI: 10.1371/journal.pone.0269716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 05/27/2022] [Indexed: 11/19/2022] Open
Abstract
Understanding the grazing process and animal response to sward structures (e.g., sward height) is key to setting targets for efficient grazing management. We hypothesized that the short-term intake rate (STIR) of dry matter (DM) and digestible organic matter (OM) by dairy heifers is maximized with Kikuyu grass (Cenchrus clandestinus—Hochst. ex Chiov.) of intermediate sward heights. The treatments consisted of five pre-grazing sward heights (10, 15, 20, 25, and 30 cm) randomly assigned to two of ten paddocks. The experimental design included two measurements of each paddock at different periods and times of day. Three Holstein heifers (440 ± 42 kg body weight) were used to determine the STIR, which was estimated using the double-weighing technique with correction for insensible weight losses. The bite mass (BM), bite rate (BR), sward structural characteristics, and nutritional value of herbage samples were assessed. The data were analyzed using mixed models with a factorial arrangement of five sward heights, two times of day, and two evaluation periods. The sward height of Kikuyu grass that maximized both STIRs was approximately 20 cm. The STIR of the DM was 30% and 15% lower than the maximum in the shortest and tallest swards tested, respectively. In swards shorter than 20 cm, the STIR was lower because the BM decreased with sward height, whereas in those greater than 20 cm, the lower BM and STIR of DM was explained by a decrease in bulk density and bite volume. The top stratum was composed mainly of highly digestible leaf blades with similar nutrient content across sward heights; therefore the STIR of digestible OM was also maximized at 20 cm. Hence, the optimal pre-grazing sward height of Kikuyu grass should be managed at 20 cm under rotational stocking systems to maximize nutrient intake rate of dairy heifers.
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Affiliation(s)
- Alejandra Marín Gómez
- Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- Facultad de Ciencias Agrarias, Departamento de Producción Animal, Universidad Nacional de Colombia, Medellín, Colombia
- * E-mail:
| | - Emilio A. Laca
- Department of Plant Sciences, University of California, Davis, California, United States of America
| | - Tiago Celso Baldissera
- Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri), Lages, Santa Catarina, Brazil
| | - Cassiano Eduardo Pinto
- Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri), Lages, Santa Catarina, Brazil
| | - Fábio Cervo Garagorry
- Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri), Lages, Santa Catarina, Brazil
| | - Angel S. Zubieta
- Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Carolina Bremm
- Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Jerôme Bindelle
- Precision Livestock and Nutrition Unit, AgricultureIsLife, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, Liège University, Gembloux, Belgium
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Carrizo IM, López Colomba E, Tommasino E, Carloni E, Bollati G, Grunberg K. Contrasting adaptive responses to cope with drought stress and recovery in Cenchrus ciliaris L. and their implications for tissue lignification. Physiol Plant 2021; 172:762-779. [PMID: 33179274 DOI: 10.1111/ppl.13274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/27/2020] [Accepted: 11/06/2020] [Indexed: 06/11/2023]
Abstract
Cenchrus ciliaris L. is a widely used species for cattle feed in arid and semi-arid regions due to good forage value and known tolerance to drought conditions. Here, we provide insights to adaptive responses of two contrasting genotypes of C. ciliaris (drought-tolerant "RN51" and drought-sensitive "RN1") to face drought stress and recovery conditions and the implications for tissue lignification. Drought stress caused a reversible decrease in the leaf water relationship and damage to photosystem II, leading to an increased generation of reactive oxygen species and lipid peroxidation. Plants of RN51 exhibited a pronounced increase of antioxidant enzymatic activities. Unlike the drought-sensitive genotype, RN51 exhibited further development of lignified tissues and bulliform cells and had the greatest thickness of the adaxial epidermis. Drought stress led to the rapid activation of the expression of lignin biosynthesis pathway-related enzymes. The transcript level of the caffeoyl-CoA O-methyltransferase gene decreased in RN1, whereas cinnamoyl-CoA reductase transcripts were increased in RN51. After rewatering, the tolerant genotype recovered more rapidly than RN1. Even though the two genotypes survived when they were exposed to drought stress, RN1 showed the highest reduction in growth parameters, and this reduction was sustained during rewatering. The results indicated that the capacity to regulate lipid peroxidation and mitigate oxidative damage could be one of the mechanisms included in tolerance to drought stress. In addition, the development of foliar characteristics, like thickness of the adaxial epidermis, well-developed bulliform cells, and intensive lignified tissues, are considered anatomical adaptive strategies for drought tolerance in C. ciliaris.
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Affiliation(s)
- Iliana M Carrizo
- Consejo Nacional de Investigaciones Científicas y Técnicas, Godoy Cruz, Argentina
- Unidad de Estudios Agropecuarios, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto Nacional de Tecnología Agropecuaria (INTA), Córdoba, Argentina
| | - Eliana López Colomba
- Unidad de Estudios Agropecuarios, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto Nacional de Tecnología Agropecuaria (INTA), Córdoba, Argentina
- Instituto Nacional de Tecnología Agropecuaria (INTA), Centro de Investigaciones Agropecuarias (CIAP), Instituto de Fisiología y Recursos Genéticos Vegetales (IFRGV), Córdoba, Argentina
- Facultad de Ciencias Agropecuarias, Universidad Católica de Córdoba, Córdoba, Argentina
| | - Exequiel Tommasino
- Instituto Nacional de Tecnología Agropecuaria (INTA), Centro de Investigaciones Agropecuarias (CIAP), Instituto de Fisiología y Recursos Genéticos Vegetales (IFRGV), Córdoba, Argentina
| | - Edgardo Carloni
- Instituto Nacional de Tecnología Agropecuaria (INTA), Centro de Investigaciones Agropecuarias (CIAP), Instituto de Fisiología y Recursos Genéticos Vegetales (IFRGV), Córdoba, Argentina
| | - Graciela Bollati
- Facultad de Ciencias Agropecuarias, Universidad Católica de Córdoba, Córdoba, Argentina
| | - Karina Grunberg
- Consejo Nacional de Investigaciones Científicas y Técnicas, Godoy Cruz, Argentina
- Unidad de Estudios Agropecuarios, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto Nacional de Tecnología Agropecuaria (INTA), Córdoba, Argentina
- Instituto Nacional de Tecnología Agropecuaria (INTA), Centro de Investigaciones Agropecuarias (CIAP), Instituto de Fisiología y Recursos Genéticos Vegetales (IFRGV), Córdoba, Argentina
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Kogbara RB, Yiming W, Iyengar SR, Onwusogh UC, Youssef K, Al-Ansary M, Sunifar PA, Arora D, Al-Sharshani A, Abdalla OAE, Al-Wawi HM. Recycling industrial biosludge for buffel grass production in Qatar: Impact on soil, leachate and plant characteristics. Chemosphere 2020; 247:125886. [PMID: 31955045 DOI: 10.1016/j.chemosphere.2020.125886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 01/06/2020] [Accepted: 01/09/2020] [Indexed: 06/10/2023]
Abstract
The agricultural industry in Qatar is highly dependent on using soil enhancing materials due to challenging soil and climatic conditions. Hence, this work investigated the potential of industrial biosludge from the wastewater treatment plant (WWTP) of a Gas-to-Liquids (GTL) plant to enhance an arid soil compared to fertilizer and compost. A fodder crop, buffel grass (Cenchrus ciliaris), was grown in semi-controlled pots containing a typical Qatari agricultural soil and admixtures over a 12-month period. The treatments included soil plus five biosludge percentage contents: 0.75, 1.5, 3, 6 and 12%. These were compared with soil only, soil plus 20-20-20 NPK fertilizer and soil plus 3% compost controls. Analyses of soil physical and chemical properties, the resulting leachate, and plant growth characteristics were conducted at set periods. The results indicate that up to 3% biosludge content led to better plant growth compared to the controls, with the optimum at 1.5% biosludge content for all growth characteristics studied. Biosludge addition to soil increased the volume of different pore types, especially micropores, which enhanced water retention and influenced plant growth. Regression modelling identified leachate Si and Fe concentrations, and biomass K content as the most influential variables for fresh biomass weight, plant height and the number of tillers, respectively. Biosludge addition to the soil around the optimum level did not cause detrimental changes to the resulting leachate and plant biomass. The findings of this work could lead to minimization of biosludge landfilling and allow for savings in fertilizers and irrigation water in arid regions.
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Affiliation(s)
- Reginald B Kogbara
- Mechanical Engineering Program, Texas A&M University at Qatar, P.O. Box 23874, Education City, Doha, Qatar.
| | - Wubulikasimu Yiming
- Mechanical Engineering Program, Texas A&M University at Qatar, P.O. Box 23874, Education City, Doha, Qatar
| | - Srinath R Iyengar
- Mechanical Engineering Program, Texas A&M University at Qatar, P.O. Box 23874, Education City, Doha, Qatar
| | | | - Karim Youssef
- Qatar Shell Research & Technology Center, QSTP LLC, Doha, Qatar
| | - Marwa Al-Ansary
- Qatar Shell Research & Technology Center, QSTP LLC, Doha, Qatar
| | | | - Dhruv Arora
- Qatar Shell Research & Technology Center, QSTP LLC, Doha, Qatar
| | | | - Osman A E Abdalla
- Department of Agricultural Research, Ministry of Municipality & Environment, Doha, Qatar
| | - Hayel M Al-Wawi
- Department of Agricultural Research, Ministry of Municipality & Environment, Doha, Qatar
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Rodrigues TCGDC, Freitas PM, Santos EM, de Araújo GGL, Pires AJV, Ayres MCC, de Carvalho LM, Souza JG, de Carvalho GGP. Effects of ammoniated pearl millet silage on intake, feeding behavior, and blood metabolites in feedlot lambs. Trop Anim Health Prod 2019; 51:2323-2331. [PMID: 31172451 DOI: 10.1007/s11250-019-01914-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 05/01/2019] [Indexed: 02/07/2023]
Abstract
The aim of this study was to evaluate the effects of urea as an additive in the ensiling of pearl millet on the intake, feeding behavior, and metabolic parameters of feedlot-finished lambs. Thirty-two uncastrated, mixed-breed male lambs were used in the experiment. Diets were composed of pearl millet silage enriched with 0, 2, 4, or 6% urea plus a concentrate containing ground corn, soybean meal, and a mineral mixture. The treatments did not affect feed intake (P > 0.05) but influenced (P < 0.05) eating time (in min/day, in min/kg of dry matter (DM), and in min/kg of neutral detergent fiber (NDF)) and chewing time in min/kg of DM. Eating efficiency (in g DM/h and in g NDFap/h) responded linearly (P < 0.05) to the increasing urea levels in the silages. By contrast, there was no effect (P > 0.05) of diets on the blood protein profile (total proteins and albumin), although the serum urea levels responded quadratically (P < 0.05). Increasing urea levels in the silage did not change the blood energy profile (cholesterol and triglycerides) or blood enzyme activity (alanine aminotransferase (ALT), aspartate aminotransferase (AST), and gamma-glutamyl transferase (GGT); P > 0.05). In conclusion, the treatment of pearl millet silage with urea does not influence the DM intake or metabolic parameters of lambs, but leads to increased eating time and decreased eating efficiency.
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Affiliation(s)
| | | | | | | | | | - Maria C C Ayres
- Federal University of Bahia, Salvador, Bahia, 40170-100, Brazil
| | | | - Jocely G Souza
- Federal University of Bahia, Salvador, Bahia, 40170-100, Brazil
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Serba DD, Muleta KT, St Amand P, Bernardo A, Bai G, Perumal R, Bashir E. Genetic Diversity, Population Structure, and Linkage Disequilibrium of Pearl Millet. Plant Genome 2019; 12:1-12. [PMID: 33016587 DOI: 10.3835/plantgenome2018.11.0091] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 05/07/2019] [Indexed: 05/09/2023]
Abstract
Mapping of GBS reads of 398 accessions to the draft genome sequence identified 82,112 SNPs Model-based clustering analysis revealed a hierarchical genetic structure of six subgroups Greater LD decay in the west-African subpopulation is likely due to long history of recombination Genetic differentiation analysis among subpopulations revealed variation in selection signatures Pearl millet [Cenchrus americanus (L.) Morrone syn. Pennisetum glaucum (L.) R. Br.] is one of the most extensively cultivated cereals in the world, after wheat (Triticum aestivum L.), maize (Zea mays L.), rice (Oryza sativa L.), barley (Hordeum vulgare L.), and sorghum [Sorghum bicolor (L.) Moench]. It is the main component of traditional farming systems and a staple food in the arid and semiarid regions of Africa and southern Asia. However, its genetic improvement is lagging behind other major cereals and the yield is still low. Genotyping-by-sequencing (GBS)-based single-nucleotide polymorphism (SNP) markers were screened on a total of 398 accessions from different geographic regions to assess genetic diversity, population structure, and linkage disequilibrium (LD). By mapping the GBS reads to the reference genome sequence, 82,112 genome-wide SNPs were discovered. The telomeric regions of the chromosomes have the higher SNP density than in pericentromeric regions. Model-based clustering analysis of the population revealed a hierarchical genetic structure of six subgroups that mostly overlap with the geographic origins or sources of the genotypes but with differing levels of admixtures. A neighbor-joining phylogeny analysis revealed that germplasm from western Africa rooted the dendrogram with much diversity within each subgroup. Greater LD decay was observed in the west-African subpopulation than in the other subpopulations, indicating a long history of recombination among landraces. Also, genome scan of genetic differentiatation detected different selection histories among subpopulations. These results have potential application in the development of genomic-assisted breeding in pearl millet and heterotic grouping of the lines for improved hybrid performance.
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Affiliation(s)
- Desalegn D Serba
- Kansas State Univ., Agricultural Research Center-Hays, Hays, 1232 240th Avenue, Hays, KS, 67601, USA
| | - Kebede T Muleta
- Hard Winter Wheat Genetics Research Unit, USDA-ARS, Manhattan, KS
| | - Paul St Amand
- Hard Winter Wheat Genetics Research Unit, USDA-ARS, Manhattan, KS
| | - Amy Bernardo
- Hard Winter Wheat Genetics Research Unit, USDA-ARS, Manhattan, KS
| | - Guihua Bai
- Hard Winter Wheat Genetics Research Unit, USDA-ARS, Manhattan, KS
| | - Ramasamy Perumal
- Kansas State Univ., Agricultural Research Center-Hays, Hays, 1232 240th Avenue, Hays, KS, 67601, USA
| | - Elfadil Bashir
- Kansas State Univ., Agricultural Research Center-Hays, Hays, 1232 240th Avenue, Hays, KS, 67601, USA
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Contiero RL, Rios FA, Biffe DF, Braz GBP, Constantin J, de Oliveira RS, Gheno EA, Lucio FR. Effect of day time climatic conditions associated with different 2,4-D formulations on spray deposition and weed control. J Environ Sci Health B 2019; 54:803-809. [PMID: 31264502 DOI: 10.1080/03601234.2019.1634970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The aim of this study was to evaluate the effect of time of the day and their associated climatic conditions on spray deposition of two 2,4-D formulations, as well as the influence on weed control. The experiment was installed in the field in complete randomized design. Treatments were arranged in factorial design 8 × 2, with 20 repetitions. First factor corresponded to different application time (1:00, 4:00, 7:00, 10:00, 13:00, 16:00, 19:00, and 22:00) with their respective climatic conditions. The second factor consisted of two formulations of 2,4-D applied at 776 g a.e. ha-1 (2,4-D amine and 2,4-D choline salt with Colex-D™ Technology) + glyphosate (816 g a.e. ha-1). There was more spray deposition when 2,4-D choline formulation was used, and such differences were more evident for applications performed under adverse climatic conditions. More spray deposition was found in applications performed at times of day with more favorable temperature and humidity of the air conditions. Only the initial control of the evaluated species was affected by the time of application.
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Affiliation(s)
| | - Fabiano A Rios
- Agronomy Department, Universidade Estadual de Maringá, Maringá, Brazil
| | - Denis F Biffe
- Agronomy Department, Universidade Estadual de Maringá, Maringá, Brazil
| | | | - Jamil Constantin
- Agronomy Department, Universidade Estadual de Maringá, Maringá, Brazil
| | | | - Eliezer A Gheno
- Agronomy Department, Universidade Estadual de Maringá, Maringá, Brazil
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Masi M, Meyer S, Clement S, Pescitelli G, Cimmino A, Cristofaro M, Evidente A. Chloromonilinic Acids C and D, Phytotoxic Tetrasubstituted 3-Chromanonacrylic Acids Isolated from Cochliobolus australiensis with Potential Herbicidal Activity against Buffelgrass ( Cenchrus ciliaris). J Nat Prod 2017; 80:2771-2777. [PMID: 29039952 DOI: 10.1021/acs.jnatprod.7b00583] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The fungal pathogen Cochliobolus australiensis isolated from infected leaves of the invasive weed buffelgrass (Pennisetum ciliare) was grown in vitro to evaluate its ability to produce phytotoxic metabolites that could potentially be used as natural herbicides against this weed. Two new tetrasubstituted 3-chromanonacrylic acids, named chloromonilinic acids C (1) and D (2), were isolated from the liquid cultures of C. australiensis, together with the known chloromonilinic acid B. Chloromonilinic acids C and D were characterized by spectroscopic and chemical methods as (E)-3-chloro-3-[(5-hydroxy-3-(1-hydroxy-2-methoxy-2-oxoethyl)-7-methyl-4-oxo-4H-chromen-2-yl)]acrylic acid and (Z)-3-chloro-3-[(5-hydroxy-3-(2-methoxy-2-oxoethyl)-7-methyl-4-oxo-4H-chromen-2-yl)]acrylic acid, respectively. The stereochemistry of chloromonilinic acids C and D was determined using a combination of spectroscopic and computational methods, including electronic circular dichroism. The fungus produced these compounds in two different liquid media together with cochliotoxin, radicinin, radicinol, and their 3-epimers. The radicinin-related compounds were also produced when the fungus was grown in wheat seed solid culture, but chloromonilinic acids were not found in the solid culture organic extract. All three chloromonilinic acids were toxic to buffelgrass in a seedling elongation bioassay, with significantly delayed germination and dramatically reduced radicle growth, especially at a concentration of 5 × 10-3 M.
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Affiliation(s)
- Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli "Federico II", Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
- BBCA onlus , Via A. Signorelli 105, 00123 Rome, Italy
| | - Susan Meyer
- U.S. Forest Service Rocky Mountain Research Station, Shrub Sciences Laboratory , 735 North 500 East, Provo, Utah 84606, United States
| | - Suzette Clement
- U.S. Forest Service Rocky Mountain Research Station, Shrub Sciences Laboratory , 735 North 500 East, Provo, Utah 84606, United States
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , Via Moruzzi 13, 56124 Pisa, Italy
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli "Federico II", Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
| | - Massimo Cristofaro
- BBCA onlus , Via A. Signorelli 105, 00123 Rome, Italy
- ENEA C.R. Casaccia, SSPT-BIOAG-PROBIO , Via Anguillarese 301, 00123 Rome, Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli "Federico II", Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
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Zhang T, Fu WD, Zhang RH, Song Z, Bai C, Huang CC, Zhang GL. [Effects of invasive Cenchrus spinifex on nitrogen pools in sandy grassland]. Ying Yong Sheng Tai Xue Bao 2017; 28:1522-1532. [PMID: 29745188 DOI: 10.13287/j.1001-9332.201705.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cenchrus spinifex is an invasive plant found in large areas of northern China. In this study, we focused on analysis of the effects of C. spinifex on soil nitrogen and plant nitrogen pools in Horqin sandy grassland. In addition, a pot experiment with 15N tracing techniques was designed to study the biological nitrogen fixation ability of C. spinifex, compared with two native grasses, Elymus dahuricus and Agropyron cristatum. The total soil nitrogen pool in C. spinifex invaded-area increased significantly by 47.5% and 20.8%, and the soil ammonium nitrogen pool decreased significantly by 25.6% and 25.2%, compared with those in bare and native plant Roegneria kamoji areas, respectively. The plant shoot nitrogen pool decreased significantly by 18.7% in C. spinifex compared with native plant R. kamoji. Atom% 15N, atom% 15N excess and atom% 15N weighting excess of C. spinifex were all significantly lower than those of E. dahuricus and A. cristatum. The nitrogen use efficiencies of C. spinifex and E. dahuricus were 48.5% and 47.0%, respectively, and no significant difference was observed. Ndfa of C. spinifex accounted for 60.2%, when growing together with E. dahuricus. These results suggested that the characteristics on the high efficient use for nitrogen of this invasive weed might an ecological adaptation mechanism, leading to successful colonization and spread in Horqin Steppe.
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Affiliation(s)
- Ting Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Wei Dong Fu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Rui Hai Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Zhen Song
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Chao Bai
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Cheng Cheng Huang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guo Liang Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Grice AC, Friedel MH, Marshall NA, Van Klinken RD. Tackling contentious invasive plant species: a case study of buffel grass in Australia. Environ Manage 2012; 49:285-294. [PMID: 22057697 DOI: 10.1007/s00267-011-9781-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Accepted: 10/18/2011] [Indexed: 05/31/2023]
Abstract
Introduced plants that have both production values and negative impacts can be contentious. Generally they are either treated as weeds and their use prohibited; or unfettered exploitation is permitted and land managers must individually contend with any negative effects. Buffel grass (Cenchrus ciliaris) is contentious in Australia and there has been no attempt to broadly and systematically address the issues surrounding it. However, recent research indicates that there is some mutual acceptance by proponents and opponents of each others' perspectives and we contend that this provides the basis for a national approach. It would require thorough and on-going consultation with stakeholders and development of realistic goals that are applicable across a range of scales and responsive to regional differences in costs, benefits and socio-economic and biophysical circumstances. It would be necessary to clearly allocate responsibilities and ascertain the most appropriate balance between legislative and non-legislative mechanisms. A national approach could involve avoiding the introduction of additional genetic material, countering proliferation in regions where the species is sparse, preventing incursion into conservation reserves where it is absent, containing strategically located populations and managing communities to prevent or reduce dominance by buffel grass. This approach could be applied to other contentious plant species.
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Affiliation(s)
- Anthony C Grice
- CSIRO, Ecosystem Sciences, Private Bag PO Aitkenvale, Townsville, QLD, 4814, Australia.
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KURIEN PP, SWAMINATHAN M, SUBRAHMANYAN V. The metabolism of nitrogen, calcium and phosphorus in children on a poor Indian diet based on baira (Pennisetum typhoideum). Ann Biochem Exp Med 1961; 21:41-6. [PMID: 13755267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
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KRISHNASWAMY N, RAMAN VS, NAIR NH. An autotetraploid in the pearl millet. CURR SCI INDIA 1950; 19:252-3. [PMID: 14778313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
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CHANDRASEKHARAN SN, SUNDARARAJ DD. Branched ears in Pennisetum typhoides Stapf et Hubbard. CURR SCI INDIA 1950; 19:92-3. [PMID: 15414627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
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KRISHNASWAMY N, RAMAN VS. A note on the amphidiploid of the hybrid of Pennisetum typhoides Stapf. and Hubbard P. purpureum Schumach. CURR SCI INDIA 1949; 18:15. [PMID: 18112243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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21
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VAN HORN DL, STOREY WB. Chromosome behavior in a cattail millet X Napier grass cross. Hawaii Acad Sci Honol 1946; 21:11. [PMID: 20245287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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