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Sujinah Sujinah
Pasca Sarjana Pendidikan Bahasa Dan Sastra Indonesia UMSurabaya
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Journal : Seminar Nasional Lahan Suboptimal

 1 
Penghalang Oksidatif Akar Padi terhadap Keracunan Besi Sujinah, Sujinah; Diniaty, Rossa
Seminar Nasional Lahan Suboptimal Vol 10, No 1 (2022): Prosiding Seminar Nasional Lahan Suboptimal ke-10 “Revitalisasi Sumber Pangan N
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Sujinah, Diniaty R. 2022. Oxydative barrier of rice roots against iron toxicity. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-10 Tahun 2022, Palembang 27 Oktober 2022. pp. 495-503. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Most of the mineral soils in swamps contain iron and under anaerobic and low pH, Fe3+ is reduced to Fe2+ which is easily soluble and absorbed by roots. Excessive of Fe2+ cause toxicity plants which will interference various plant metabolism. Iron is absorbed by roots into the root tissue, then transported through the xylem to the shoots. Precipitation of Fe2+ in plant tissues causes excessive production of reactive oxygen species (ROS), especially hydroxyl radical (OH-) through Fenton reacion, thereby damaging cell structures, membranes, DNA, and protein in plants. This paper will discuss how plant can avoid excess iron in the root area. The root tip is the first part that will get iron toxicity. At the tip of the root (root cap) produces cells called root border cells (RBCs) which play a role in protecting the roots from abiotic stress. In flooded conditions, there is a release of oxygen into the rhizosphere by aerenchyma, or called radial oxygen loss (ROL) which will induce the formation of iron plaque. The formation of iron plaque will the interfere with the absorption of root nutritions. One of the tolerance mechanisms that occur at the root level is the exclusion evasion through the ROL barrier and the entry of iron by forming lignin in the root cell wall.
Co-Authors Ach. Jauza Agus Budiman Agus Budiman Agustiani, Nurwulan Albaburrahim Ali Nuke Afandy Anas Ahmadi Angwidya, Fancy Anggraini Asror . Ayun, Qurrota Chalimah Chalimah Dedy Wahyudi Dewi Ratna Sari Diniaty, Rossa Dwi Guntoro Eko Suoriyanto Eko Supriyanto Eko Supriyanto Elmirna, Nora Encik Savira Isnah Endang Suprapti Eni Soelistiowati Fajarisman Gunawan Fancy Anggraini Angwidya Fatin, Idhoofiyatul Haryanti, Tining Heny Sulistyowati Humaira, Husina Inayati Inayati Indah Kurniawati Indra Gunawan Indrastuti Apri Rumanti Insani Wahyu Mubarok, Insani Wahyu Jauza, Ach. Jayawarsa, A.A. Ketut Kusnarto kusnarto, kusnarto LA SAHARA, LA Lailatul Irmiah Leny Ocktalia Luh Putu Ratna Sundari Lusi Afritrianita Agtha Isnandar M. Azadien Nuzul Zhuhuri M. Ridlwan, M. Margaret, Swisci Maria Endang P Maria Endang Pudyastuti Maria Endang Pudyastuti Maria Endang Widyastuti Mar’atus Sholihah Mawaddah, Nir Mintowati Mintowati Misnawati Misnawati Mulyadi, Agus Nafisah Nafisah Nani Yunani, Nani Ngatma'in Ngatma'in Ngatma'in Ngatma'in Ngatma'in, Ngatma'in Ngatma’in Ngatma’in Ngatma’in Ngatma’in Ngatma’in, Ngatma’in Ngatmain Ngatmain Ngatmain, Ngatmain Ningsih, Rina Dirgahayu Novieanti, Linggar Iba Pheni Cahya Kartika Pheni Cahya Kartika Pheny Cahya Kartika Prasetyawati, Dian R. Panji Hermoyo RACHMAWATI, DIAN KARINA Rahma, Ulfa Saada Omar Sakti Sakti Sholekhah, Siti Siti Aminah Siti Sholekhah Suher Suher Suher, Suher Sunarsih Sunarsih Sunarsih Sunarsih Susi Darihastining Susi Darihastining Suyoto Suyoto Tining Hariyanti Ulfa Sufiya Rahmah Umi Nur Qomariyah Wiwi Wikanta Wiwik Mardiana Yarno, Yarno Yeni Rahmawati Yuliani Yuliani Yunita, Vika