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Temirbekova SK, Polivanova OB, Sardarova II, Bastaubaeva SO, Kalashnikova EA, Begeulov MS, Ashirbekov MZ, Afanasyeva YV, Zhemchuzhina NS, Ionova NE, Statsyuk NV, Kirakosyan RN, Saleh A. Naked Oat and Fusarium culmorum (W.G.Sm.) Sacc. Responses to Growth Regulator Effects. Pathogens 2023; 12:1051. [PMID: 37624011 PMCID: PMC10459904 DOI: 10.3390/pathogens12081051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/26/2023] Open
Abstract
The antioxidant defense system can be stimulated by growth regulators in plants when they are under stress, such as exposure to pathogens. There are a lot of natural growth regulators on the market, but no research has been carried out yet to determine how effective they are. This field and laboratory study examines the impact of two commonly used Russian growth regulators, Crezacin and Zircon, along with artificial infection with Fusarium culmorum on the antioxidant system of naked oat. The results show that, compared to the control, Crezacin-treated plants had higher contents of low molecular weight fructose and nonenzymatic antioxidants like proline, phenolic compounds, and flavonoids. Zircon-treated plants had a lower content of proline, carbohydrates, and lower total antioxidant activity than the control plants. The obtained data show that Crezacin treatment mainly affected nonenzymatic systems of the antioxidant defense. This treatment was more successful than the Zircon application, which did not show any appreciable effectiveness and was typically associated with an improvement in oat productivity. The treatment with growth regulators and a fungal suspension performed at the flowering phase provided the best effect on the biochemical parameters and productivity of naked oats. Moreover, oat treatment with the pathogen promoted the reproductive capabilities of the plants, while growth regulators helped in avoiding infectious stress.
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Affiliation(s)
- Sulukhan K. Temirbekova
- All-Russian Research Institute of Phytopathology, Bolshye Vyazemy 143050, Russia; (I.I.S.); (N.S.Z.); (N.V.S.)
| | - Oksana B. Polivanova
- Department of Biotechnology, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya Street 49, Moscow 127434, Russia; (O.B.P.); (E.A.K.); (M.S.B.); (R.N.K.); (A.S.)
| | - Irina I. Sardarova
- All-Russian Research Institute of Phytopathology, Bolshye Vyazemy 143050, Russia; (I.I.S.); (N.S.Z.); (N.V.S.)
| | - Sholpan O. Bastaubaeva
- Kazakh Scientific Research Institute of Agriculture and Plant Growing, Almalybakvillage 021601, Kazakhstan;
| | - Elena A. Kalashnikova
- Department of Biotechnology, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya Street 49, Moscow 127434, Russia; (O.B.P.); (E.A.K.); (M.S.B.); (R.N.K.); (A.S.)
| | - Marat Sh. Begeulov
- Department of Biotechnology, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya Street 49, Moscow 127434, Russia; (O.B.P.); (E.A.K.); (M.S.B.); (R.N.K.); (A.S.)
| | - Mukhtar Zh. Ashirbekov
- Department of Agronomy and Forestry, Faculty of Agronomy, Manash Kozybayev North Kazakhstan University, 86 Pushkin St., Petropavlovsk 150000, Kazakhstan;
| | - Yuliya V. Afanasyeva
- Federal Horticultural Center for Breeding, Agrotechnology and Nursery, Zagoryevskaya Street 4, Moscow 115598, Russia;
| | - Natalya S. Zhemchuzhina
- All-Russian Research Institute of Phytopathology, Bolshye Vyazemy 143050, Russia; (I.I.S.); (N.S.Z.); (N.V.S.)
| | - Natalya E. Ionova
- Biotechnology and Pharmacology, Department of Biochemistry, Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan 420008, Russia;
| | - Natalia V. Statsyuk
- All-Russian Research Institute of Phytopathology, Bolshye Vyazemy 143050, Russia; (I.I.S.); (N.S.Z.); (N.V.S.)
| | - Rima N. Kirakosyan
- Department of Biotechnology, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya Street 49, Moscow 127434, Russia; (O.B.P.); (E.A.K.); (M.S.B.); (R.N.K.); (A.S.)
| | - Abdulrahman Saleh
- Department of Biotechnology, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya Street 49, Moscow 127434, Russia; (O.B.P.); (E.A.K.); (M.S.B.); (R.N.K.); (A.S.)
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Fu X, Bai M, Xu Y, Wang T, Hui Z, Hu X. Cultivars identification of oat ( Avena sativa L.) seed via multispectral imaging analysis. FRONTIERS IN PLANT SCIENCE 2023; 14:1113535. [PMID: 36824197 PMCID: PMC9941542 DOI: 10.3389/fpls.2023.1113535] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/16/2023] [Indexed: 05/24/2023]
Abstract
Cultivar identification plays an important role in ensuring the quality of oat production and the interests of producers. However, the traditional methods for discrimination of oat cultivars are generally destructive, time-consuming and complex. In this study, the feasibility of a rapid and nondestructive determination of cultivars of oat seeds was examined by using multispectral imaging combined with multivariate analysis. The principal component analysis (PCA), linear discrimination analysis (LDA) and support vector machines (SVM) were applied to classify seeds of 16 oat cultivars according to their morphological features, spectral traits or a combination thereof. The results demonstrate that clear differences among cultivars of oat seeds could be easily visualized using the multispectral imaging technique and an excellent discrimination could be achieved by combining data of the morphological and spectral features. The average classification accuracy of the testing sets was 89.69% for LDA, and 92.71% for SVM model. Therefore, the potential of a new method for rapid and nondestructive identification of oat cultivars was provided by multispectral imaging combined with multivariate analysis.
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Affiliation(s)
- Xiuzhen Fu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Mengjie Bai
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Yawen Xu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Tao Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Zhenning Hui
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Xiaowen Hu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
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Khairullina A, Micic N, Jørgensen HJL, Bjarnholt N, Bülow L, Collinge DB, Jensen B. Biocontrol Effect of Clonostachys rosea on Fusarium graminearum Infection and Mycotoxin Detoxification in Oat ( Avena sativa). PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12030500. [PMID: 36771583 PMCID: PMC9918947 DOI: 10.3390/plants12030500] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/09/2023] [Accepted: 01/18/2023] [Indexed: 06/01/2023]
Abstract
Oat (Avena sativa) is susceptible to Fusarium head blight (FHB). The quality of oat grain is threatened by the accumulation of mycotoxins, particularly the trichothecene deoxynivalenol (DON), which also acts as a virulence factor for the main pathogen Fusarium graminearum. The plant can defend itself, e.g., by DON detoxification by UGT-glycosyltransferases (UTGs) and accumulation of PR-proteins, even though these mechanisms do not deliver effective levels of resistance. We studied the ability of the fungal biocontrol agent (BCA) Clonostachys rosea to reduce FHB and mycotoxin accumulation. Greenhouse trials showed that C. rosea-inoculation of oat spikelets at anthesis 3 days prior to F. graminearum inoculation reduced both the amount of Fusarium DNA (79%) and DON level (80%) in mature oat kernels substantially. DON applied to C. rosea-treated spikelets resulted in higher conversion of DON to DON-3-Glc than in mock treated plants. Moreover, there was a significant enhancement of expression of two oat UGT-glycosyltransferase genes in C. rosea-treated oat. In addition, C. rosea treatment activated expression of genes encoding four PR-proteins and a WRKY23-like transcription factor, suggesting that C. rosea may induce resistance in oat. Thus, C. rosea IK726 has strong potential to be used as a BCA against FHB in oat as it inhibits F. graminearum infection effectively, whilst detoxifying DON mycotoxin rapidly.
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Affiliation(s)
- Alfia Khairullina
- Division of Pure and Applied Biochemistry, Lund University, 221 00 Lund, Sweden
- Department of Plant and Environmental Sciences and Copenhagen Plant Science Centre, University of Copenhagen, DK-1871 Frederiksberg, Denmark
| | - Nikola Micic
- Department of Plant and Environmental Sciences and Copenhagen Plant Science Centre, University of Copenhagen, DK-1871 Frederiksberg, Denmark
| | - Hans J. Lyngs Jørgensen
- Department of Plant and Environmental Sciences and Copenhagen Plant Science Centre, University of Copenhagen, DK-1871 Frederiksberg, Denmark
| | - Nanna Bjarnholt
- Department of Plant and Environmental Sciences and Copenhagen Plant Science Centre, University of Copenhagen, DK-1871 Frederiksberg, Denmark
| | - Leif Bülow
- Division of Pure and Applied Biochemistry, Lund University, 221 00 Lund, Sweden
| | - David B. Collinge
- Department of Plant and Environmental Sciences and Copenhagen Plant Science Centre, University of Copenhagen, DK-1871 Frederiksberg, Denmark
| | - Birgit Jensen
- Department of Plant and Environmental Sciences and Copenhagen Plant Science Centre, University of Copenhagen, DK-1871 Frederiksberg, Denmark
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Tian H, Zhou Q, Liu W, Zhang J, Chen Y, Jia Z, Shao Y, Wang H. Responses of photosynthetic characteristics of oat flag leaf and spike to drought stress. FRONTIERS IN PLANT SCIENCE 2022; 13:917528. [PMID: 35968085 PMCID: PMC9365945 DOI: 10.3389/fpls.2022.917528] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/12/2022] [Indexed: 05/27/2023]
Abstract
Raising crops production via improving photosynthesis has always been focused. Recently excavating and increasing the photosynthetic capacity of non-leaf organs becomes an important approach to crops yield increase. Here we studied the photosynthetic characteristics of the flag leaf and the non-leaf organs including the sheath, the glume and the lemma under greenhouse. The relative water content (RWC), the stomatal characteristics, the photosynthetic pigment contents, the enzyme activities in C3 and C4 pathway and the malate content of the flag leaf and the non-leaf organs on 7, 14, 21, and 28 days after anthesis (denoted by 7DAA, 14DAA, 21DAA, and 28DAA) were determined under well-watered (CK) and water-stressed (D) treatments. Drought stress significantly reduced the RWC of the flag leaf and the non-leaf organs, while the variation of RWC in the glume and the lemma was lower than in the flag leaf. The chlorophyll a content, the chlorophyll b content, the total chlorophyll content and the xanthophyll content in the flag leaf were significantly decreased under D. However, drought stress significantly increased the photosynthetic pigment contents in the glume at the late stage (21DAA and 28DAA). In addition, the induced activities of PEPC, NADP-MDH, NADP-ME, NAD-ME, and PPDK in non-leaf organs under drought stress suggested that the C4 photosynthetic pathway in non-leaf organs compensated the limited C3 photosynthesis in the flag leaf. Non-leaf organs, in particular the glume, showed the crucial function in maintaining the stable photosynthetic performance of oat.
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Affiliation(s)
- Haoqi Tian
- Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Southwest Minzu University, Chengdu, China
| | - Qingping Zhou
- Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Southwest Minzu University, Chengdu, China
| | - Wenhui Liu
- Academy of Animal Science and Veterinary Medicine of Qinghai Province, Xining, China
| | - Jing Zhang
- Sichuan Animal Science Academy, Chengdu, China
| | - Youjun Chen
- Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Southwest Minzu University, Chengdu, China
| | - Zhifeng Jia
- Academy of Animal Science and Veterinary Medicine of Qinghai Province, Xining, China
| | - Yuqiao Shao
- Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Southwest Minzu University, Chengdu, China
| | - Hui Wang
- Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Southwest Minzu University, Chengdu, China
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Effects of Applying Different Doses of Selenite to Soil and Foliar at Different Growth Stage on Selenium Content and Yield of Different Oat Varieties. PLANTS 2022; 11:plants11141810. [PMID: 35890444 PMCID: PMC9324387 DOI: 10.3390/plants11141810] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/29/2022] [Accepted: 07/05/2022] [Indexed: 11/16/2022]
Abstract
(1) Background: With the increase in people’s consumption of processed oat products, the production of selenium (Se)-enriched oat has become a possibility to supplement the human body with Se. Therefore, the effects of various factors on the Se-enriched ability and yield of different oat varieties were comprehensively studied. (2) Methods: cv.“Pinyan 5” and cv.“Bayou 18” were applied at the stem-elongation stage and heading stage in the Jinzhong (JZ), and cv.“Bayou 1” and cv.“Jinyan 18” were applied at the heading stage and flowering stage in the northwestern Shanxi (JXB) with different doses of Na2SeO3 (0, 5.48, 10.96, 21.92, 43.84, 65.76, 98.64, 0, 5.48, 10.96, 21.92, 43.84, 65.76, 98.64, 147.96 g hm−2) by soil application and foliar spraying. (3) Results: The grain Se content and yield of oat were affected by the variety, Se application dose, stage and method of Se supplementation. Additionally, the Se content in oat grain was positively correlated with the Se application dose while the yield of oat first increased and then decreased with the Se application dose. (4) Conclusions: In the JZ and JXB, 21.92 g hm−2 and 43.84 g hm−2 Se was sprayed on the leaves of cv.“Bayou 18” and cv.“Bayou 1” at the heading stage, respectively, was the most effective Se biofortification program.
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Khairullina A, Tsardakas Renhuldt N, Wiesenberger G, Bentzer J, Collinge DB, Adam G, Bülow L. Identification and Functional Characterisation of Two Oat UDP-Glucosyltransferases Involved in Deoxynivalenol Detoxification. Toxins (Basel) 2022; 14:toxins14070446. [PMID: 35878183 PMCID: PMC9318758 DOI: 10.3390/toxins14070446] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 06/20/2022] [Accepted: 06/27/2022] [Indexed: 02/04/2023] Open
Abstract
Oat is susceptible to several Fusarium species that cause contamination with different trichothecene mycotoxins. The molecular mechanisms behind Fusarium resistance in oat have yet to be elucidated. In the present work, we identified and characterised two oat UDP-glucosyltransferases orthologous to barley HvUGT13248. Overexpression of the latter in wheat had been shown previously to increase resistance to deoxynivalenol (DON) and nivalenol (NIV) and to decrease disease the severity of both Fusarium head blight and Fusarium crown rot. Both oat genes are highly inducible by the application of DON and during infection with Fusarium graminearum. Heterologous expression of these genes in a toxin-sensitive strain of Saccharomyces cerevisiae conferred high levels of resistance to DON, NIV and HT-2 toxins, but not C4-acetylated trichothecenes (T-2, diacetoxyscirpenol). Recombinant enzymes AsUGT1 and AsUGT2 expressed in Escherichia coli rapidly lost activity upon purification, but the treatment of whole cells with the toxin clearly demonstrated the ability to convert DON into DON-3-O-glucoside. The two UGTs could therefore play an important role in counteracting the Fusarium virulence factor DON in oat.
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Affiliation(s)
- Alfia Khairullina
- Division of Pure and Applied Biochemistry, Lund University, 221 00 Lund, Sweden; (N.T.R.); (J.B.); (L.B.)
- Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark;
- Correspondence:
| | - Nikos Tsardakas Renhuldt
- Division of Pure and Applied Biochemistry, Lund University, 221 00 Lund, Sweden; (N.T.R.); (J.B.); (L.B.)
| | - Gerlinde Wiesenberger
- Institute of Microbial Genetics, Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna, Konrad Lorenz Str. 24, 3430 Tulln, Austria; (G.W.); (G.A.)
| | - Johan Bentzer
- Division of Pure and Applied Biochemistry, Lund University, 221 00 Lund, Sweden; (N.T.R.); (J.B.); (L.B.)
| | - David B. Collinge
- Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark;
| | - Gerhard Adam
- Institute of Microbial Genetics, Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna, Konrad Lorenz Str. 24, 3430 Tulln, Austria; (G.W.); (G.A.)
| | - Leif Bülow
- Division of Pure and Applied Biochemistry, Lund University, 221 00 Lund, Sweden; (N.T.R.); (J.B.); (L.B.)
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Zhang X, Liu W, Lv Y, Bai J, Li T, Yang X, Liu L, Zhou H. Comparative transcriptomics reveals new insights into melatonin-enhanced drought tolerance in naked oat seedlings. PeerJ 2022; 10:e13669. [PMID: 35782091 PMCID: PMC9248784 DOI: 10.7717/peerj.13669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 06/10/2022] [Indexed: 01/17/2023] Open
Abstract
The growth and development of naked oat (Avena nuda L.) seedlings, a grain recognized as nutritious and healthy, is limited by drought. Melatonin plays a positive role in plants under drought stress. However, its function is unclear in naked oats. This study demonstrated that melatonin enhances drought stress tolerance in oat seedlings. Melatonin application alleviated the declining growth parameters of two naked oat varieties, Huazao No.2 (H2) and Jizhangyou No.15 (J15), under drought stress by increasing the chlorophyll content and photosynthetic rate of leaves. Melatonin pretreatment induced differential gene expression in H2 and J15 under drought stress. Subsequently, the differential gene expression responses to melatonin in the two varieties were further analyzed. The key drought response transcription factors and the regulatory effect of melatonin on drought-related transcription factors were assessed, focusing on genes encoding proteins in the ABA signal transduction pathway, including PYL, PP2C, ABF, SNRK2, and IAA. Taken together, this study provides new insights into the effect and underlying mechanism of melatonin in alleviating drought stress in naked oat seedlings.
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Affiliation(s)
- Xinjun Zhang
- Zhangjiakou Academy of Agricultural Sciences, Zhangjiakou, Hebei, China
| | - Wenting Liu
- Zhangjiakou Academy of Agricultural Sciences, Zhangjiakou, Hebei, China
| | - Yaci Lv
- Hengshui University, Hengshui, Hebei, China
| | - Jing Bai
- Zhangjiakou Academy of Agricultural Sciences, Zhangjiakou, Hebei, China
| | - Tianliang Li
- Zhangjiakou Academy of Agricultural Sciences, Zhangjiakou, Hebei, China
| | - Xiaohong Yang
- Zhangjiakou Academy of Agricultural Sciences, Zhangjiakou, Hebei, China
| | - Liantao Liu
- College of Agronomy, Hebei Agricultural University, Baoding, Hebei, China
| | - Haitao Zhou
- Zhangjiakou Academy of Agricultural Sciences, Zhangjiakou, Hebei, China
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The Effect of Cultivation Practices on Agronomic Performance, Elemental Composition and Isotopic Signature of Spring Oat (Avena sativa L.). PLANTS 2022; 11:plants11020169. [PMID: 35050057 PMCID: PMC8778240 DOI: 10.3390/plants11020169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/03/2022] [Accepted: 01/06/2022] [Indexed: 11/26/2022]
Abstract
The present study investigated the effects of cultivation practices on grain (oats) yield and yield components, such as straw yield, harvest index, thousand kernel weight, and plant lodging. In addition, multi-element composition and isotopic signature (δ13C, δ15N) of the oat grains were studied. The spring oat cultivar ‘Noni’ was grown in a long-term field experiment during 2015–2020, using three management practices: control without organic amendment, incorporation of manure every third year and incorporation of crop residues/cover crop in the rotation. Synthetic nitrogen (N) (0, 55, 110 and 165 kg/ha) was applied during oat development in each system. Multi-element analysis of mature grains from two consecutive years (2016 and 2017) was performed using EDXRF spectroscopy, while stable isotope ratios of carbon (C) and nitrogen (N) were obtained using an elemental analyzer coupled to an isotope ratio mass spectrometer (EA/IRMS). The results show how cultivation practices affect yield components and isotopic and elemental signatures. Increasing the N rate improved both the oat grain and straw yields and increased susceptibility to lodging. The results show how the elemental content (Si, Ca, Zn, Fe, Ti, Br and Rb) in the oat grains were influenced by intensification, and a noticeable decrease in elemental content at higher N rates was the result of a dilution effect of increased dry matter production. The mean δ15N values in oat grains ranged from 2.5‰ to 6.4‰ and decreased with increasing N rate, while δ13C values ranged from −29.9‰ to –28.9‰. Based on the δ15N values, it was possible to detect the addition of synthetic N above an N rate of 55 kg/ha, although it was impossible to differentiate between different management practices using stable isotopes.
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Kutasy E, Buday-Bódi E, Virág IC, Forgács F, Melash AA, Zsombik L, Nagy A, Csajbók J. Mitigating the Negative Effect of Drought Stress in Oat ( Avena sativa L.) with Silicon and Sulphur Foliar Fertilization. PLANTS (BASEL, SWITZERLAND) 2021; 11:plants11010030. [PMID: 35009034 PMCID: PMC8747363 DOI: 10.3390/plants11010030] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/15/2021] [Accepted: 12/20/2021] [Indexed: 05/25/2023]
Abstract
A field experiment was carried out in the 2020-2021 growing season, aiming at investigating the abiotic stress tolerance of oat (Avena sativa L.) with silicon and sulphur foliar fertilization treatments and monitoring the effect of treatments on the physiology, production and stress tolerance of winter oat varieties. In the Hungarian national list of varieties, six winter oat varieties were registered in 2020, and all of the registered varieties were sown in a small plot field experiment in Debrecen, Hungary. The drought tolerance of the oat could be tested, because June was very dry in 2021; the rainfall that month totaled 6 mm only despite a 30-year average of 66.5 mm, and the average temperature for the month was 3.2 °C higher than the 30-year average. Foliar application of silicon and sulphur fertilizers caused differences in the photosynthesis rate, total conductance to CO2, transpiration, water use efficiency, leaf area, chlorophyll content, carotenoid content, thousand kernel weight (TKW) and yield of winter oat. The application of silicon significantly increased the photosynthesis rate (16.8-149.3%), transpiration (5.4-5.6%), air-leaf temperature difference (16.2-43.2%), chlorophyll (1.0%) and carotenoid (2.5%) content. The yield increased by 10.2% (Si) and 8.0% (Si plus S), and the TKW by 3.3% (Si) and 5.0% (Si plus S), compared to the control plots. The plants in the control plots assimilated less CO2 while transpiring 1 m3 water more than in the Si, S or Si plus S fertilized plots. The effect of the silicon varied from 9.0 to 195.4% in water use efficiency (WUE) in the three development stages (BBCH52, BBCH65 and BBCH77). A lower leaf area index was measured in the foliar fertilized plots; even so, the yield was higher, compared to that from the control plots. Great variation was found in response to the foliar Si and S fertilization among winter oat varieties-in WUE, 2.0-43.1%; in total conductance to CO2, 4.9-37.3%; in leaf area, 1.6-34.1%. Despite the droughty weather of June, the winter oat varieties produced a high yield. The highest yield was in 'GK Arany' (7015.7 kg ha-1), which was 23.8% more than the lowest yield ('Mv Kincsem', 5665.6 kg ha -1). In the average of the treatments, the TKW increased from 23.9 to 33.9 g (41.8%). 'Mv Hópehely' had the highest TKW. Our results provide information about the abiotic stress tolerance of winter oat, which, besides being a good model plant because of its drought resistance, is an important human food and animal feed.
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Affiliation(s)
- Erika Kutasy
- Institute of Crop Sciences, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi Street 138, H-4032 Debrecen, Hungary; (I.C.V.); (F.F.); (A.A.M.); (J.C.)
| | - Erika Buday-Bódi
- Institute of Water and Environmental Management, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi Street 138, H-4032 Debrecen, Hungary; (E.B.-B.); (A.N.)
| | - István Csaba Virág
- Institute of Crop Sciences, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi Street 138, H-4032 Debrecen, Hungary; (I.C.V.); (F.F.); (A.A.M.); (J.C.)
| | - Fanni Forgács
- Institute of Crop Sciences, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi Street 138, H-4032 Debrecen, Hungary; (I.C.V.); (F.F.); (A.A.M.); (J.C.)
| | - Anteneh Agezew Melash
- Institute of Crop Sciences, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi Street 138, H-4032 Debrecen, Hungary; (I.C.V.); (F.F.); (A.A.M.); (J.C.)
| | - László Zsombik
- Institutes for Agricultural Research and Educational Farm, University of Debrecen, Böszörményi Street 138, H-4032 Debrecen, Hungary;
| | - Attila Nagy
- Institute of Water and Environmental Management, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi Street 138, H-4032 Debrecen, Hungary; (E.B.-B.); (A.N.)
| | - József Csajbók
- Institute of Crop Sciences, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi Street 138, H-4032 Debrecen, Hungary; (I.C.V.); (F.F.); (A.A.M.); (J.C.)
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10
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Wang J, Wei X, Chen T, White JF, Zhao G, Li C. Effects of Oat Varieties and Growing Locations on Seed-Borne Fungal Communities. Front Microbiol 2021; 12:724999. [PMID: 34975777 PMCID: PMC8718926 DOI: 10.3389/fmicb.2021.724999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 11/29/2021] [Indexed: 11/13/2022] Open
Abstract
Many species of seed-borne fungi are closely allied with seed varieties and growing regions, including many seed-borne pathogens, but their species richness and distribution remain largely unknown. This study was conducted to explore the seed-borne fungal composition, abundance and diversity in Avena sativa (B7) and A. nuda (B2) seed samples collected from Baicheng (BB), Dingxi (DB) and Haibei (HB) city, using Illumina sequencing techniques. Our results show that a total of 543,707 sequences were obtained and these were assigned to 244 operational taxonomic units (OTUs) with 97% similarity. Oat varieties and growing locations had a significant difference on seed-borne fungal diversity. HB had a higher fungal diversity than BB and DB, Shannon diversity and ACE richness index of fungal in HB seeds was significantly higher than in BB and DB (P < 0.05). In different varieties, both taxon richness and evenness of B7 seeds was significantly higher than B2 (P < 0.05). A total of 4 fungal phyla and 26 fungal genera were detected. Ascomycota was the dominant phylum and Alternaria sp. was the most abundant genus in B2 and B7 oat seeds from different regions. Mycosphaerella sp. had a higher abundance in HB7 and DB7, respectively, Epicoccum sp. had a higher abundance in HB7 and BB7. The results of alpha and beta diversity analysis revealed the presence of different effects in fungal communities of different varieties and regions of oat, especially in seed pathogenic fungi distribution. Structural equation modeling also explained oat varieties and growing regions have significant influences on seed-borne fungal abundance, composition and diversity. This study demonstrated that the differences of varieties and regions are the main factors resulting in the changes of seed-borne fungal community of oat.
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Affiliation(s)
- Jianjun Wang
- State Key Laboratory of Grassland Agro-Ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, Gansu Tech Innovation Center of Western China Grassland Industry, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Xuekai Wei
- State Key Laboratory of Grassland Agro-Ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, Gansu Tech Innovation Center of Western China Grassland Industry, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Taixiang Chen
- State Key Laboratory of Grassland Agro-Ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, Gansu Tech Innovation Center of Western China Grassland Industry, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - James F White
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, NJ, United States
| | - Guiqin Zhao
- Pratacultural College, Gansu Agricultural University, Lanzhou, China
| | - Chunjie Li
- State Key Laboratory of Grassland Agro-Ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, Gansu Tech Innovation Center of Western China Grassland Industry, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
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11
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Wang H, Xu J, Li X, You E, Wang L, Shen Y. Characterization of the complete chloroplast genome of Avena chinensis (Poales: Poaceae). MITOCHONDRIAL DNA PART B-RESOURCES 2021; 6:3137-3139. [PMID: 34651080 PMCID: PMC8510592 DOI: 10.1080/23802359.2021.1985404] [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] [Indexed: 11/30/2022]
Abstract
Avena chinensis is recognized as one of the cereals with high nutritional value in the world. In this study, the complete chloroplast (cp) genome sequence of A. chinensis was reported. The complete cp genome of A. chinensis was 135,899 bp in length with a GC content of 38.51%, including a large single copy (LSC) region of 80,117 bp, a small single copy (SSC) region of 12,576 bp, and a pair of inverted repeated regions of 21,603 bp. The A. chinensis cp genome encoded 128 functional genes, including 82 protein-coding genes, 38 tRNAs, and eight rRNAs. The phylogenetic analysis showed that A. chinensis was closely related to Avena hybrid and Avena occidentalis.
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Affiliation(s)
- Hangdong Wang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Qinghai Provincial Key Laboratory of Crop Molecular Breeding, Laboratory for Research and Utilization of Qinghai-Tibetan Plateau Germplasm Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Innovation Academy for Seed Design, Chinese Academy of Sciences, Xining, China.,Scientific Research Station for Modern Agriculture in Wuwei Oasis, Wuwei, China
| | - Jinqing Xu
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Qinghai Provincial Key Laboratory of Crop Molecular Breeding, Laboratory for Research and Utilization of Qinghai-Tibetan Plateau Germplasm Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Innovation Academy for Seed Design, Chinese Academy of Sciences, Xining, China
| | - Xiaolan Li
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Qinghai Provincial Key Laboratory of Crop Molecular Breeding, Laboratory for Research and Utilization of Qinghai-Tibetan Plateau Germplasm Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,University of Chinese Academy of Sciences, Beijing, China
| | - En You
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Qinghai Provincial Key Laboratory of Crop Molecular Breeding, Laboratory for Research and Utilization of Qinghai-Tibetan Plateau Germplasm Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Lei Wang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Qinghai Provincial Key Laboratory of Crop Molecular Breeding, Laboratory for Research and Utilization of Qinghai-Tibetan Plateau Germplasm Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Innovation Academy for Seed Design, Chinese Academy of Sciences, Xining, China
| | - Yuhu Shen
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Qinghai Provincial Key Laboratory of Crop Molecular Breeding, Laboratory for Research and Utilization of Qinghai-Tibetan Plateau Germplasm Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Innovation Academy for Seed Design, Chinese Academy of Sciences, Xining, China.,Scientific Research Station for Modern Agriculture in Wuwei Oasis, Wuwei, China
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12
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Havrlentová M, Šliková S, Gregusová V, Kovácsová B, Lančaričová A, Nemeček P, Hendrichová J, Hozlár P. The Influence of Artificial Fusarium Infection on Oat Grain Quality. Microorganisms 2021; 9:2108. [PMID: 34683429 PMCID: PMC8538375 DOI: 10.3390/microorganisms9102108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/29/2021] [Accepted: 10/04/2021] [Indexed: 11/16/2022] Open
Abstract
Adverse environmental conditions, such as various biotic and abiotic stresses, are the primary reason for decreased crop productivity. Oat, as one of the world's major crops, is an important cereal in human nutrition. The aim of this work was to analyze the effect of inoculation with two species of the genus Fusarium on the selected qualitative parameters of oat grain intended for the food industry. Artificial inoculation caused a statistically significant decrease in the content of starch, oleic, linoleic, and α-linolenic acids in oat grains compared to the control. Moreover, artificial inoculation had no statistically significant effect on the content of β-D-glucans, total dietary fiber, total lipids, palmitic, stearic, and cis-vaccenic acids. An increase in the content of polyunsaturated fatty acids in oat grains was observed after inoculation. The most important indicator of Fusarium infection was the presence of the mycotoxin deoxynivalenol in the grain. The content of β-D-glucans, as a possible protective barrier in the cell wall, did not have a statistically significant effect on the inoculation manifestation in the grain.
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Affiliation(s)
- Michaela Havrlentová
- Department of Biotechnologies, Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, 917 01 Trnava, Slovakia; (V.G.); (B.K.)
- National Agricultural and Food Centre, Research Institute of Plant Production in Piešťany, 921 68 Piešťany, Slovakia; (S.Š.); (A.L.); (J.H.)
| | - Svetlana Šliková
- National Agricultural and Food Centre, Research Institute of Plant Production in Piešťany, 921 68 Piešťany, Slovakia; (S.Š.); (A.L.); (J.H.)
| | - Veronika Gregusová
- Department of Biotechnologies, Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, 917 01 Trnava, Slovakia; (V.G.); (B.K.)
| | - Bernadett Kovácsová
- Department of Biotechnologies, Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, 917 01 Trnava, Slovakia; (V.G.); (B.K.)
| | - Andrea Lančaričová
- National Agricultural and Food Centre, Research Institute of Plant Production in Piešťany, 921 68 Piešťany, Slovakia; (S.Š.); (A.L.); (J.H.)
| | - Peter Nemeček
- Department of Chemistry, Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, 917 01 Trnava, Slovakia;
| | - Jana Hendrichová
- National Agricultural and Food Centre, Research Institute of Plant Production in Piešťany, 921 68 Piešťany, Slovakia; (S.Š.); (A.L.); (J.H.)
| | - Peter Hozlár
- National Agricultural and Food Centre, Research Institute of Plant Production in Piešťany, Research and Breeding Station at Vígľaš-Pstruša, 962 12 Pstruša, Slovakia;
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13
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Genotype and Environment Affect the Grain Quality and Yield of Winter Oats ( Avena sativa L.). Foods 2021; 10:foods10102356. [PMID: 34681405 PMCID: PMC8535078 DOI: 10.3390/foods10102356] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/21/2021] [Accepted: 09/29/2021] [Indexed: 11/16/2022] Open
Abstract
The extent to which the quality and yield of plant varieties are influenced by the environment is important for their successful uptake by end users particularly as climatic fluctuations are resulting in environments that are highly variable from one growing season to another. The genotype-by-environment interaction (GEI) of milling quality and yield was studied using four winter oat varieties in multi-locational trials over 4 years in the U.K. Significant differences across the 22 environments were found between physical grain quality and composition as well as grain yield, with the environment having a significant effect on all of the traits measured. Grain yield was closely related to grain number m−2 whereas milling quality traits were related to grain size attributes. Considerable genotype by environment interaction was obtained for all grain quality traits and stability analysis revealed that the variety Mascani was the least sensitive to the environment for all milling quality traits measured whereas the variety Balado was the most sensitive. Examination of environmental conditions at specific within-year stages of crop development indicated that both temperature and rainfall during grain development were correlated with grain yield and β-glucan content and with the ease of removing the hull (hullability).
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14
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Kim IS, Hwang CW, Yang WS, Kim CH. Multiple Antioxidative and Bioactive Molecules of Oats ( Avena sativa L.) in Human Health. Antioxidants (Basel) 2021; 10:antiox10091454. [PMID: 34573086 PMCID: PMC8471765 DOI: 10.3390/antiox10091454] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 02/06/2023] Open
Abstract
Oats (Avena sativa L.) are rich in protein, fiber, calcium, vitamins (B, C, E, and K), amino acids, and antioxidants (beta-carotene, polyphenols, chlorophyll, and flavonoids). β-glucan and avenanthramides improve the immune system, eliminate harmful substances from the body, reduce blood cholesterol, and help with dietary weight loss by enhancing the lipid profile and breaking down fat in the body. β-glucan regulates insulin secretion, preventing diabetes. Progladins also lower cholesterol levels, suppress the accumulation of triglycerides, reduce blood sugar levels, suppress inflammation, and improve skin health. Saponin-based avanacosidase and functional substances of flavone glycoside improve the immune function, control inflammation, and prevent infiltration in the skin. Moreover, lignin and phytoestrogen prevent hormone-related cancer and improve the quality of life of postmenopausal women. Sprouted oats are rich in saponarin in detoxifying the liver. The literatures have been reviewed and the recent concepts and prospects have been summarized with figures and tables. This review discusses recent trends in research on the functionality of oats rather than their nutritional value with individual immunity for self-medication. The oat and its acting components have been revisited for the future prospect and development of human healthy and functional sources.
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Affiliation(s)
- Il-Sup Kim
- Advanced Bio-Resource Research Center, Kyungpook National University, Daegu 41566, Korea;
| | - Cher-Won Hwang
- Global Leadership School, Handong Global University, Pohang 37554, Gyeongsangbuk-Do, Korea
- Correspondence: (C.-W.H.); (W.-S.Y.); (C.-H.K.)
| | - Woong-Suk Yang
- Nodaji Co., Ltd., Pohang 37927, Gyeongsangbuk-Do, Korea
- Correspondence: (C.-W.H.); (W.-S.Y.); (C.-H.K.)
| | - Cheorl-Ho Kim
- Department of Biological Sciences, SungKyunKwan University, Suwon 16419, Gyunggi-Do, Korea
- Samsung Advanced Institute of Health Science and Technology (SAIHST), Sungkyunkwan University, Seoul 06351, Korea
- Correspondence: (C.-W.H.); (W.-S.Y.); (C.-H.K.)
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15
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Assessing the impact of nitrogen supplementation in oats across multiple growth locations and years with targeted phenotyping and high-resolution metabolite profiling approaches. Food Chem 2021; 355:129585. [PMID: 33799237 PMCID: PMC8121753 DOI: 10.1016/j.foodchem.2021.129585] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/02/2021] [Accepted: 03/07/2021] [Indexed: 12/11/2022]
Abstract
The response to nitrogen of 4 winter oat varieties in three field trials was analysed. A novel high-resolution method was developed to profile metabolite changes. Conditions that enhance yield do not necessarily result in higher nutritional value. Choice of variety is of equally high importance as the nitrogen levels applied.
Oats (Avena sativa L.) are a healthy food, being high in dietary fibre (e.g. β-glucans), antioxidants, minerals, and vitamins. Understanding the effect of variety and crop management on nutritional quality is important. The response of four oat varieties to increased nitrogen levels was investigated across multiple locations and years with respect to yield, grain quality and metabolites (assessed via GC- and LC- MS). A novel high-resolution UHPLC-PDA-MS/MS method was developed, providing improved metabolite enrichment, resolution, and identification. The combined phenotyping approach revealed that, amino acid levels were increased by nitrogen supplementation, as were total protein and nitrogen containing lipid levels, whereas health-beneficial avenanthramides were decreased. Although nitrogen addition significantly increased grain yield and β-glucan content, supporting increasing the total nitrogen levels recommended within agricultural guidelines, oat varietal choice as well as negative impacts upon health beneficial secondary metabolites and the environmental burdens associated with nitrogen fertilisation, require further consideration.
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16
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Yan H, Zhou P, Peng Y, Bekele WA, Ren C, Tinker NA, Peng Y. Genetic diversity and genome-wide association analysis in Chinese hulless oat germplasm. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:3365-3380. [PMID: 32888041 DOI: 10.1007/s00122-020-03674-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 08/21/2020] [Indexed: 05/12/2023]
Abstract
Genotyping-by-sequencing (GBS)-derived molecular markers reveal the distinct genetic population structure and relatively narrow genetic diversity of Chinese hulless oat landraces. Four markers linked to the naked grain gene (N1) are identified by genome-wide association study (GWAS). Interest in hulless oat (Avena sativa ssp. nuda), a variant of common oat (A. sativa) domesticated in Western Asia, has increased in recent years due to its free-threshing attribute and its domestication history. However, the genetic diversity and population structure of hulless oat, as well as the genetic mechanism of hullessness, are poorly understood. In this study, the genetic diversity and population structure of a worldwide sample of 805 oat lines including 186 hulless oats were investigated using genotyping-by-sequencing. Population structure analyses showed a strong genetic differentiation between hulless landraces vs other oat lines, including the modern hulless cultivars. The distinct subpopulation stratification of hulless landraces and their low genetic diversity suggests that a domestication bottleneck existed in hulless landraces. Additionally, low genetic diversity within European oats and strong differentiation between the spring oats and southern origin oat lines revealed by previous studies were also observed in this study. Genomic regions contributing to these genetic differentiations suggest that genetic loci related to growth habit and stress resistance may have been under intense selection, rather than the hulless-related genomic regions. Genome-wide association analysis detected four markers that were highly associated with hullessness. Three of these were mapped on linkage group Mrg21 at a genetic position between 195.7 and 212.1 cM, providing robust evidence that the dominant N1 locus located on Mrg21 is the single major factor controlling this trait.
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Affiliation(s)
- Honghai Yan
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Pingping Zhou
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yun Peng
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wubishet A Bekele
- Agriculture and Agri-Food Canada, Ottawa Research and Development Centre, 960 Carling Ave, Ottawa, ON, K1A0C6, Canada
| | - Changzhong Ren
- Baicheng Academy of Agricultural Sciences, Baicheng, 137000, China
| | - Nicholas A Tinker
- Agriculture and Agri-Food Canada, Ottawa Research and Development Centre, 960 Carling Ave, Ottawa, ON, K1A0C6, Canada.
| | - Yuanying Peng
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130, China.
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17
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Genome-wide Association Study and Genomic Prediction for Fusarium graminearum Resistance Traits in Nordic Oat (Avena sativa L.). AGRONOMY-BASEL 2020. [DOI: 10.3390/agronomy10020174] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Fusarium head blight (FHB) and the accumulation of deoxynivalenol (DON) mycotoxin induced by Fusarium graminearum and other Fusarium fungi cause serious problems for oat production in the Nordic region (Scandinavia, Fennoscandia). Besides toxin accumulation, FHB causes reduction in grain yield and in germination capacity. Here, genomic approaches for accelerating breeding efforts against FHB and DON accumulation were studied. Resistance-related traits included DON content, F. graminearum DNA (relative to oat DNA) content (qFUSG) measured with real-time quantitative polymerase chain reaction (PCR), Fusarium-infected kernels (FIKs) and germination capacity (GC). Plant germplasm used in the study consisted of mostly breeding lines, and additionally, a few cultivars and exotic accessions. Genome-wide association study (GWAS) and genomic prediction, enabling genomic selection (GS) on the resistance-related and collected agronomic traits, were performed. Considerable genetic correlations between resistance-related traits were observed: DON content had a positive correlation (0.60) with qFUSG and a negative correlation (−0.63) with germination capacity. With the material in hand, we were not able to find any significant associations between markers and resistance-related traits. On the other hand, in genomic prediction, some resistance-related traits showed favorable accuracy in fivefold cross-validation (GC = 0.57). Genomic prediction is a promising method and genomic estimated breeding values (GEBVs) generated for germination capacity are applicable in oat breeding programs.
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18
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Specific enrichment of microbes and increased ruminal propionate production: the potential mechanism underlying the high energy efficiency of Holstein heifers fed steam-flaked corn. AMB Express 2019; 9:209. [PMID: 31884565 PMCID: PMC6935382 DOI: 10.1186/s13568-019-0937-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 12/19/2019] [Indexed: 12/18/2022] Open
Abstract
Corn grain has a high starch content and is used as main energy source in ruminant diets. Compared with finely ground corn (FGC), steam-flaked corn (SFC) could improve the milk yield of lactating dairy cows and the growth performance of feedlot cattle, but the detailed mechanisms underlying those finding are unknown. The rumen microbiome breaks down feedstuffs into energy substrates for the host animals, and contributes to feed efficiency. Therefore, the current study was conducted to investigate the ruminal bacterial community changes of heifers fed differently processed corn (SFC or FGC) using 16S rRNA sequencing technologies, and to uncover the detailed mechanisms underlying the high performance of ruminants fed the SFC diet. The results revealed that different processing methods changed the rumen characteristics and impacted the composition of the rumen bacteria. The SFC diet resulted in an increased average daily gain in heifers, an increased rumen propionate concentration and a decreased rumen ammonia nitrogen concentration. The relative abundance of the phylum Firmicutes and Proteobacteria were tended to increase or significantly increased in the heifers fed SFC diet compared with FGC diet. In addition, the relative abundance of amylolytic bacteria of the genera Succinivibrio, Roseburia and Blautia were elevated, and the cellulolytic bacteria (Ruminococcaceae_UCG-014 and Ruminococcaceae_UCG-013) were decreased by the steam flaking method. Spearman correlation analysis between the ruminal bacteria and the microbial metabolites showed that the rumen propionate concentration was positively correlated with genera Succinivibrio and Blautia abundance, but negatively correlated with genera Ruminococcaceae_UCG-014 abundance. Evident patterns of efficient improvement in rumen propionate and changes in rumen microbes to further improve feed conversion were identified. This observation uncovers the potential mechanisms underlying the increased efficiency of the SFC processing method for enhancing ruminant performance.
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19
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Khobra R, Sareen S, Meena BK, Kumar A, Tiwari V, Singh GP. Exploring the traits for lodging tolerance in wheat genotypes: a review. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2019; 25:589-600. [PMID: 31168225 PMCID: PMC6522606 DOI: 10.1007/s12298-018-0629-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 11/02/2018] [Accepted: 11/20/2018] [Indexed: 05/23/2023]
Abstract
The rising population entails enhancement in wheat productivity to ensure substantial food supply which often get hindered by various biotic and abiotic stresses. Lodging, due to rain and high velocity wind causes significant economic and yield losses in cereals. Hence, lodging is emerging as a major hurdle to achieve the required yield targets. Various morphological, biochemical, anatomical and genetic traits contribute to produce a plant competent enough to bear lodging stress. Hence, in this review, we intend to elaborate the cause and impact relationship of lodging and tried to link lodging tolerance traits to field practices to minimize the losses. Because of the complex nature of lodging phenomenon, it is still obscure to identify best correlated traits to screen genotype in breeding programmes. However, the genotypes with best correlated traits like plant height, culm wall thickness should be introduced/selected in breeding programmes to inculcate lodging tolerance in a high yielding variety as in recent era lodging tolerance is a key factor to enhance productivity and farmer's income as well.
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Affiliation(s)
- Rinki Khobra
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - Sindhu Sareen
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - Braj Kishor Meena
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - Arvind Kumar
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - Vinod Tiwari
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - G. P. Singh
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
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20
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Allwood JW, Xu Y, Martinez-Martin P, Palau R, Cowan A, Goodacre R, Marshall A, Stewart D, Howarth C. Rapid UHPLC-MS metabolite profiling and phenotypic assays reveal genotypic impacts of nitrogen supplementation in oats. Metabolomics 2019; 15:42. [PMID: 30868357 PMCID: PMC6476850 DOI: 10.1007/s11306-019-1501-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 02/22/2019] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Oats (Avena sativa L.) are a whole grain cereal recognised for their health benefits and which are cultivated largely in temperate regions providing both a source of food for humans and animals, as well as being used in cosmetics and as a potential treatment for a number of diseases. Oats are known as being a cereal source high in dietary fibre (e.g. β-glucans), as well as being high in antioxidants, minerals and vitamins. Recently, oats have been gaining increased global attention due to their large number of beneficial health effects. Consumption of oats has been proven to lower blood LDL cholesterol levels and blood pressure, thus reducing the risk of heart disease, as well as reducing blood-sugar and insulin levels. OBJECTIVES Oats are seen as a low input cereal. Current agricultural guidelines on nitrogen application are believed to be suboptimal and only consider the effect of nitrogen on grain yield. It is important to understand the role of both variety and of crop management in determining nutritional quality of oats. In this study the response of yield, grain quality and grain metabolites to increasing nitrogen application to levels greater than current guidelines were investigated. METHODS Four winter oat varieties (Mascani, Tardis, Balado and Gerald) were grown in a replicated nitrogen response trial consisting of a no added nitrogen control and four added nitrogen treatments between 50 and 200 kg N ha-1 in a randomised split-plot design. Grain yield, milling quality traits, β-glucan, total protein and oil content were assessed. The de-hulled oats (groats) were also subjected to a rapid Ultra High Performance Liquid Chromatography-Mass Spectrometry (UHPLC-MS) metabolomic screening approach. RESULTS Application of nitrogen had a significant effect on grain yield but there was no significant difference between the response of the four varieties. Grain quality traits however displayed significant differences both between varieties and nitrogen application level. β-glucan content significantly increased with nitrogen application. The UHPLC-MS approach has provided a rapid, sub 15 min per sample, metabolite profiling method that is repeatable and appropriate for the screening of large numbers of cereal samples. The method captured a wide range of compounds, inclusive of primary metabolites such as the amino acids, organic acids, vitamins and lipids, as well as a number of key secondary metabolites, including the avenanthramides, caffeic acid, and sinapic acid and its derivatives and was able to identify distinct metabolic phenotypes for the varieties studied. Amino acid metabolism was massively upregulated by nitrogen supplementation as were total protein levels, whilst the levels of organic acids were decreased, likely due to them acting as a carbon skeleton source. Several TCA cycle intermediates were also impacted, potentially indicating increased TCA cycle turn over, thus providing the plant with a source of energy and reductant power to aid elevated nitrogen assimilation. Elevated nitrogen availability was also directed towards the increased production of nitrogen containing phospholipids. A number of both positive and negative impacts on the metabolism of phenolic compounds that have influence upon the health beneficial value of oats and their products were also observed. CONCLUSIONS Although the developed method has broad applicability as a rapid screening method or a rapid metabolite profiling method and in this study has provided valuable metabolic insights, it still must be considered that much greater confidence in metabolite identification, as well as quantitative precision, will be gained by the application of higher resolution chromatography methods, although at a large expense to sample throughput. Follow up studies will apply higher resolution GC (gas chromatography) and LC (reversed phase and HILIC) approaches, oats will be also analysed from across multiple growth locations and growth seasons, effectively providing a cross validation for the results obtained within this preliminary study. It will also be fascinating to perform more controlled experiments with sampling of green tissues, as well as oat grains, throughout the plants and grains development, to reveal greater insight of carbon and nitrogen metabolism balance, as well as resource partitioning into lipid and secondary metabolism.
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Affiliation(s)
- J William Allwood
- Environmental and Biochemical Sciences, James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK.
| | - Yun Xu
- Manchester Institute of Biotechnology, School of Chemistry, University of Manchester, Princess Street, Manchester, M1 7DN, UK
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Biosciences Building, Crown Street, Liverpool, L69 7ZB, UK
| | - Pilar Martinez-Martin
- Institute of Biological, Environmental & Rural Sciences (IBERS), Aberystwyth University, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EE, UK
| | - Raphaёlle Palau
- Environmental and Biochemical Sciences, James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK
| | - Alexander Cowan
- Institute of Biological, Environmental & Rural Sciences (IBERS), Aberystwyth University, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EE, UK
| | - Royston Goodacre
- Manchester Institute of Biotechnology, School of Chemistry, University of Manchester, Princess Street, Manchester, M1 7DN, UK
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Biosciences Building, Crown Street, Liverpool, L69 7ZB, UK
| | - Athole Marshall
- Institute of Biological, Environmental & Rural Sciences (IBERS), Aberystwyth University, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EE, UK
| | - Derek Stewart
- Environmental and Biochemical Sciences, James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK
- School of Engineering and Physical Sciences, Institute of Mechanical, Process and Energy Engineering, Heriot-Watt University, Edinburgh, EH14 4AS, Scotland, UK
| | - Catherine Howarth
- Institute of Biological, Environmental & Rural Sciences (IBERS), Aberystwyth University, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EE, UK
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21
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Doligalska M, Jóźwicka K, Donskow-Łysoniewska K, Kalinowska M. The antiparasitic activity of avenacosides against intestinal nematodes. Vet Parasitol 2017; 241:5-13. [PMID: 28579031 DOI: 10.1016/j.vetpar.2017.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 03/21/2017] [Accepted: 05/09/2017] [Indexed: 12/22/2022]
Abstract
Avena sativa L., 1753 (Poaceae) is used as feed for livestock and as a crop rotation agent. The purpose of the study was to examine the molecular mechanisms behind the antihelminth activity of the oat saponins avenacoside B (AveB) and 26-desglucoavenacoside B (26DGAveB) by evaluating their effect on Heligmosomoides bakeri, a parasitic nematode of mice. The avenacosides AveB and 26DGAveB were separated and purified from A. sativa green leaves, and their mycotoxic activity was confirmed against the fungus Trichoderma harzianum. The anti-nematode activity of the avenacosides was measured by egg hatching assay. In the surviving L3 larvae exposed to avenacosides, the expression of CED-9, a protein of the apoptosis pathway, was identified by Western blotting. The protein profile of L3 larvae was monitored by High Performance Liquid Chromatography (HPLC). The action of saponins on glycoprotein pump (Pgp) activity in L3 larvae was compared to that of the pump blocker Verapamil (VPL). A mouse model was used to measure the infectivity of L3 larvae exposed to AveB and 26DGAveB, and the outcome of the immune response. Both compounds induced morphological changes in larvae and blocked Pgp activity; however, only 26DGAveB provoked expression of CED-9. The infected mice displayed changes in the molecular pattern of larval proteins and enhanced IL-4 production, indicating that avenacosides reduced the infectivity of H. bakeri larvae. In avenacosides, the residue without glucose at the C26 position demonstrated greater anti-nematode activity. Our findings indicate that A. sativa compounds are natural products with anti-parasitic activity.
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Affiliation(s)
- Maria Doligalska
- Department of Parasitology, Faculty of Biology University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland.
| | - Kinga Jóźwicka
- Department of Parasitology, Faculty of Biology University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland.
| | | | - Małgorzata Kalinowska
- Department of Plant Biochemistry, Faculty of Biology University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland.
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Rolletschek H, Fuchs J, Friedel S, Börner A, Todt H, Jakob PM, Borisjuk L. A novel noninvasive procedure for high-throughput screening of major seed traits. PLANT BIOTECHNOLOGY JOURNAL 2015; 13:188-199. [PMID: 25201084 DOI: 10.1111/pbi.12245] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 07/21/2014] [Accepted: 07/27/2014] [Indexed: 06/03/2023]
Abstract
The large numbers of samples processed in breeding and biodiversity programmes require the development of efficient methods for the nondestructive evaluation of basic seed properties. Near-infrared spectroscopy is the state-of-the-art solution for this analytical demand, but it also has some limitations. Here, we present a novel, rapid, accurate procedure based on time domain-nuclear magnetic resonance (TD-NMR), designed to simultaneously quantify a number of basic seed traits without any seed destruction. Using a low-field, benchtop (1) H-NMR instrument, the procedure gives a high-accuracy measurement of oil content (R(2) = 0.98), carbohydrate content (R(2) = 0.99), water content (R(2) = 0.98) and both fresh and dry weight of seeds/grains (R(2) = 0.99). The method requires a minimum of ~20 mg biomass per sample and thus enables to screen individual, intact seeds. When combined with an automated sample delivery system, a throughput of ~1400 samples per day is achievable. The procedure has been trialled as a proof of concept on cereal grains (collection of ~3000 accessions of Avena spp. curated at the IPK genebank). A mathematical multitrait selection approach has been designed to simplify the selection of outlying (most contrasting) accessions. To provide deeper insights into storage oil topology, some oat accessions were further analysed by three-dimensional seed modelling and lipid imaging. We conclude that the novel TD-NMR-based screening tool opens perspectives for breeding and plant biology in general.
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Affiliation(s)
- Hardy Rolletschek
- Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Gatersleben, Germany
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