Effects of row direction and row spacing on maize leaf senescence
To analyze three row orientations (south-north, east-west, southwestern 20°) and two row spacings ('65 + 65', '160 + 40'), we investigated the effect of row orientation and planting pattern on photosynthetic performance, physiological and biochemical indicators related to the agi...
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| creator | Tian, Chang Han, Jichang Li, Juan Zhen, Guo Liu, Yangyang Lu, Yangjie Wang, Yike Wang, Yang |
| description | To analyze three row orientations (south-north, east-west, southwestern 20°) and two row spacings ('65 + 65', '160 + 40'), we investigated the effect of row orientation and planting pattern on photosynthetic performance, physiological and biochemical indicators related to the aging of leaves. Results revealed that during maturity stage, in north-south and east-west, the initial fluorescence (Fo) at '65 + 65' were higher than those under'160 + 40'; the maximum quantum yield of PS2 photochemistry(ΦP0), basal quantum yield of non-photochemical processes in PS2(ΦN0)of the lower leaves and photosynthetic rate of the upper and ear leaves under'160 + 40'were higher than those under'65 + 65'. The polyphenoloxidase (POD) activities of leaves at different positions under '160 + 40' were higher than that under'65 + 65', while the malondialdehyde (MDA) content was lower. The photosynthesis rate, superoxide dismutase (SOD) and catalase (CAT) activity of leaves at different positions under southwestern 20° '160 + 40' were higher than others. Whilst MDA content '160 + 40' were lower. Therefore, in De Hui City, Jilin Province, southwestern 20° '160 + 40' delayed leaf senescence at the late stage of growth of maize, as well as the effect of increasing maize yield was most obvious. |
| doi_str_mv | 10.1371/journal.pone.0215330 |
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Results revealed that during maturity stage, in north-south and east-west, the initial fluorescence (Fo) at '65 + 65' were higher than those under'160 + 40'; the maximum quantum yield of PS2 photochemistry(ΦP0), basal quantum yield of non-photochemical processes in PS2(ΦN0)of the lower leaves and photosynthetic rate of the upper and ear leaves under'160 + 40'were higher than those under'65 + 65'. The polyphenoloxidase (POD) activities of leaves at different positions under '160 + 40' were higher than that under'65 + 65', while the malondialdehyde (MDA) content was lower. The photosynthesis rate, superoxide dismutase (SOD) and catalase (CAT) activity of leaves at different positions under southwestern 20° '160 + 40' were higher than others. Whilst MDA content '160 + 40' were lower. Therefore, in De Hui City, Jilin Province, southwestern 20° '160 + 40' delayed leaf senescence at the late stage of growth of maize, as well as the effect of increasing maize yield was most obvious.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0215330</identifier><identifier>PMID: 30998698</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Aging ; Aging (Biology) ; Biochemistry ; Catalase ; Corn ; Crop Production ; Crop yield ; Developmental biology ; Engineering ; Enzymes ; Experiments ; Fluorescence ; Gene expression ; Laboratories ; Leaves ; Lipid peroxidation ; Lipids ; Malondialdehyde ; Malondialdehyde - metabolism ; Orientation effects ; Peroxidase ; Photochemicals ; Photochemistry ; Photosynthesis ; Physiological aspects ; Physiological effects ; Physiology ; Plant biochemistry ; Plant Leaves - metabolism ; Plant Proteins - metabolism ; Polyphenol oxidase ; Presenilin 2 ; Row spacing ; Senescence ; Superoxide dismutase ; Superoxide Dismutase - metabolism ; Superoxides ; Zea mays - growth & development</subject><ispartof>PloS one, 2019-04, Vol.14 (4), p.e0215330-e0215330</ispartof><rights>COPYRIGHT 2019 Public Library of Science</rights><rights>2019 Tian et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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Results revealed that during maturity stage, in north-south and east-west, the initial fluorescence (Fo) at '65 + 65' were higher than those under'160 + 40'; the maximum quantum yield of PS2 photochemistry(ΦP0), basal quantum yield of non-photochemical processes in PS2(ΦN0)of the lower leaves and photosynthetic rate of the upper and ear leaves under'160 + 40'were higher than those under'65 + 65'. The polyphenoloxidase (POD) activities of leaves at different positions under '160 + 40' were higher than that under'65 + 65', while the malondialdehyde (MDA) content was lower. The photosynthesis rate, superoxide dismutase (SOD) and catalase (CAT) activity of leaves at different positions under southwestern 20° '160 + 40' were higher than others. Whilst MDA content '160 + 40' were lower. Therefore, in De Hui City, Jilin Province, southwestern 20° '160 + 40' delayed leaf senescence at the late stage of growth of maize, as well as the effect of increasing maize yield was most obvious.</description><subject>Aging</subject><subject>Aging (Biology)</subject><subject>Biochemistry</subject><subject>Catalase</subject><subject>Corn</subject><subject>Crop Production</subject><subject>Crop yield</subject><subject>Developmental biology</subject><subject>Engineering</subject><subject>Enzymes</subject><subject>Experiments</subject><subject>Fluorescence</subject><subject>Gene expression</subject><subject>Laboratories</subject><subject>Leaves</subject><subject>Lipid peroxidation</subject><subject>Lipids</subject><subject>Malondialdehyde</subject><subject>Malondialdehyde - metabolism</subject><subject>Orientation effects</subject><subject>Peroxidase</subject><subject>Photochemicals</subject><subject>Photochemistry</subject><subject>Photosynthesis</subject><subject>Physiological aspects</subject><subject>Physiological effects</subject><subject>Physiology</subject><subject>Plant biochemistry</subject><subject>Plant Leaves - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tian, Chang</au><au>Han, Jichang</au><au>Li, Juan</au><au>Zhen, Guo</au><au>Liu, Yangyang</au><au>Lu, Yangjie</au><au>Wang, Yike</au><au>Wang, Yang</au><au>Huang, Yuan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of row direction and row spacing on maize leaf senescence</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2019-04-18</date><risdate>2019</risdate><volume>14</volume><issue>4</issue><spage>e0215330</spage><epage>e0215330</epage><pages>e0215330-e0215330</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>To analyze three row orientations (south-north, east-west, southwestern 20°) and two row spacings ('65 + 65', '160 + 40'), we investigated the effect of row orientation and planting pattern on photosynthetic performance, physiological and biochemical indicators related to the aging of leaves. Results revealed that during maturity stage, in north-south and east-west, the initial fluorescence (Fo) at '65 + 65' were higher than those under'160 + 40'; the maximum quantum yield of PS2 photochemistry(ΦP0), basal quantum yield of non-photochemical processes in PS2(ΦN0)of the lower leaves and photosynthetic rate of the upper and ear leaves under'160 + 40'were higher than those under'65 + 65'. The polyphenoloxidase (POD) activities of leaves at different positions under '160 + 40' were higher than that under'65 + 65', while the malondialdehyde (MDA) content was lower. The photosynthesis rate, superoxide dismutase (SOD) and catalase (CAT) activity of leaves at different positions under southwestern 20° '160 + 40' were higher than others. Whilst MDA content '160 + 40' were lower. Therefore, in De Hui City, Jilin Province, southwestern 20° '160 + 40' delayed leaf senescence at the late stage of growth of maize, as well as the effect of increasing maize yield was most obvious.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>30998698</pmid><doi>10.1371/journal.pone.0215330</doi><tpages>e0215330</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Aging Aging (Biology) Biochemistry Catalase Corn Crop Production Crop yield Developmental biology Engineering Enzymes Experiments Fluorescence Gene expression Laboratories Leaves Lipid peroxidation Lipids Malondialdehyde Malondialdehyde - metabolism Orientation effects Peroxidase Photochemicals Photochemistry Photosynthesis Physiological aspects Physiological effects Physiology Plant biochemistry Plant Leaves - metabolism Plant Proteins - metabolism Polyphenol oxidase Presenilin 2 Row spacing Senescence Superoxide dismutase Superoxide Dismutase - metabolism Superoxides Zea mays - growth & development |
| title | Effects of row direction and row spacing on maize leaf senescence |
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