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| Content Provider | Springer Nature Link |
|---|---|
| Author | Muneer, Sowbiya Jeong, Byoung Ryong |
| Copyright Year | 2015 |
| Abstract | Silicon is considered an important element in several crops because it improves growth and mitigates biotic and abiotic stress. In this work, the role of silicon in limiting Fe deficiency responses by improving photosynthesis and composition of thylakoid multiprotein complexes (MPCs) has been studied. Two-week-old soybean (Glycine max L.) plants grown hydroponically with a Fe-deficient solution without FeIII-EDTA were fed with 1.0 mM silicon in the form of sodium silicate [Na2SiO3]. Responses to four Si and Fe combined treatments were analyzed after 3 and 5 days. Leaf chlorosis was generated under Fe deficiency, with decreased chlorophyll and carotenoid contents. The negative effects observed were more severe under a prolonged period of Fe deficiency. Biomass and Fe concentration in roots and shoots were largely improved by Si supply under Fe deficiency. The rates of net photosynthesis, transpiration and stomatal conductance were highly improved by the supply of Si under Fe deficiency. MPCs proteins (thylakoid complex proteins) evaluated by the first dimension followed by second-dimensional 2D-BN-SDS-PAGE and MALDI–TOF/TOF–MS observation showed that the Fe deficiency greatly decreased thylakoid MPCs and also resulted in a closure of stomata. However, these impacts of Fe deficiency were largely restored in the presence of silicon. The observed responses to silicon supply in Fe-deficient plants indicate that silicon has a significant role in limiting Fe deficiency responses by improving photosynthesis and composition of thylakoid protein complexes. |
| Starting Page | 485 |
| Ending Page | 498 |
| Page Count | 14 |
| File Format | |
| ISSN | 07217595 |
| Journal | Journal of Plant Growth Regulation |
| Volume Number | 34 |
| Issue Number | 3 |
| e-ISSN | 14358107 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2015-02-25 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | 2D-BN-SDS-PAGE Fe deficiency Si supply Soybean Thylakoid complexes Plant Sciences Plant Anatomy/Development Plant Physiology Agriculture |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science Agronomy and Crop Science |
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