LAPORAN PENELITIAN HIBAH PENELITIAN STRATEGIS NASIONAL TAHUN ANGGARAN 2009 PERAN ADHESIN PILI DAN OMP Vibrio alginolyticus SEBAGAI IMUNOSTIMULAN PADA BUDIDAYA UDANG WINDU (Penaeus monodon Fabr.) Ketua : Dr. Ir. Maftuch, M.Si Anggota : 1. Ir. Ellana Sanusi, MP 2. Rachmi Nurdiani, S.Pi, MSc. Dibiayai Oleh Direktorat Jenderal Pendidikan Tinggi, Departemen Pendidikan Nasional, melalui DIPA Universitas Brawijaya Nomor : 0174.0/02304.2/XV/2009, tanggal 31 Desember 2008 dan berdasarkan SK Rektor Nomor : 160/SK/2009, tanggal 7 Mei 2009 UNIVERSITAS BRAWIJAYA NOPEMBER 2009 RINGKASAN Usul Hibah Penelitian Strategis Nasional. Peran Adhesin pili dan Omp Vibrio alginolyticus Sebagai Imunostimulan Pada Budidaya Udang Windu (Penaeus monodon Fab.); Ketua : Dr. Ir. Maftuch, M.Si, Anggota : Ir. Ellana Sanoesi, MP dan Rachmi Nurdiani, SPi, MSc. Udang yang terserang penyakit pada kenyataannya masih mampu untuk bertahan hidup dan udang yang mampu melewati fase akut akan mengalami fase kronis. Pada fase ini, udang mampu hidup dan tumbuh relatif normal, namun udang tersebut merupakan pembawa (carrier) yang dapat ditularkan ke udang lain yang sehat. Terdapat tiga tingkatan pathogenik udang yang terserang penyakit yaitu resisten, toleran dan rentan. Penelusuran tentang kemampuan pertahanan udang pasca serangan penyakit, perlu diketahui baik dari segi imunitas dan genetiknya. Secara imunitas, udang memiliki system imun non spesifik (innate), yang terutama dijalankan hemosit (Sel granular dan semigranular) berfungsi menyimpan protein antibakteri dan enzim protease tidak aktif (inactive serine proteinase /proppA) dan dapat diaktifkan menjadi Phenoloksidase (PO) yang berperan dalam sistem pertahanan tubuh udang. Untuk mengaktifkan dibutuhkan bahan yang dapat merangsang system imun (imunostimulan). Bahan imunostimulan ini banyak ditemukan di permukaan bakteri dalam bentuk beta glukan, peptidoglikan dan LPS. Oleh karena itu digunakan molekul adhesi pili dan OMP (molekul permukaan) V. alginolyticus yang sudah dibuktikan oleh Maftuch, dkk., (2004) dapat membangkitkan respon imun ikan kerapu tikus. Secara genetic serangan penyakit seringkali menyebabkan mutasi gen DNA mitokondria. Mutasi disebabkan oleh antigen dan makromolekul ROS yang dihasilkan tubuh sebagai bentuk respon imun terhadap antigen. Oleh karena itu pada penelitian ini sangatlah penting untuk diketahu variasi genetic udang pasca perlakuan imunostimulan dan infeksi. Hasil penelitian berdasarkan uji ANOVA menunjukkan bahwa terdapat perbedaan yang nyata pada jumlah hemosit, kandungan anion superoksida dan aktivitas enzim protease pasca pemberian injeksi pili dan OMP (p<0,05). Uji BNT (Beda Nyata Terkecil) terhadap jumlah hemosit menunjukkan bahwa dosis 2 ppt memiliki nilai rerata tertinggi yaitu 1.675.000 sel/ml. Uji BNT pada kandungan anion superoksida menunjukkan bahwa dosis 2 ppt memiliki nila rerata absorbansi yang tertinggi yaitu 0,07333. Uji BNT terhadap aktivitas enzim protease menunjukkan bahwa dosis 2 ppt memiliki nilai rerata tertinggi yaitu 18,988 unit. Hasil uji hemaglutinasi keempat berat molekul protein Omp didapatkan bahwa pita protein Omp 42,95 kDa menunjukkan titer hemaglutininasi tertinggi (1/32) dan untuk hasil uji hemaglutinasi keenam berat molekul protein pili didapatkan bahwa pita protein Omp 9,08 kDa menunjukkan titer hemaglutininasi tertinggi (1/16). Nilai phagositosis udang windu yang bersifat SPF lebih besar dari yang lainnya. Aktifitas enzim phenoloxidase udang windu 24 jam infeksi vibrio harveyi berbeda nyata dengan 3 jam pasca pemberian imunostimulan. Analisis DNA mitokondria udang pasca pemberian molekul adhesi pili dan OMP lebih baik daripada pasca serangan penyakit SUMMARY Proposal National Strategic Research Grant. Role of Adhesin pili and Omp Vibrio alginolyticus For Shrimp Farming Imunostimulan In Windu (Penaeus monodon Fab.); Chairman: Dr. Ir. Maftuch, M. Si, Members: Ir. Ellana Sanoesi, MP and Rachmi Nurdiani, SPi, MSc. Shrimp disease in fact still able to survive and shrimp are able to pass the acute phase will experience a chronic phase. In this phase, the shrimp can live and grow relatively normally, but the shrimp is a carrier (carrier) that can be transmitted to other healthy shrimp. There are three levels of shrimp pathogenik of disease resistant, tolerant and susceptible. Search about post-defense capability of shrimp disease, please note both in terms of immunity and genetics. In immunity, shrimp has a non-specific immune system (innate), which mainly run hemosit (cells and granular semigranular) function stores antibacterial proteins and enzymes protease inactive (inactive Serine proteinase / proppA) and can be activated to Phenoloksidase (PO) is responsible for shrimp immune system. To activate the required materials that can stimulate the immune system (imunostimulan). Imunostimulan material is usually found on the surface of the bacteria in the form of beta glukan, peptidoglycan and LPS. Therefore use pili adhesion molecules and OMP (molecular surface) V. alginolyticus which was proved by Maftuch, et al., (2004) can generate an immune response grouper mice. In genetic disease often causes gene mutations of mitochondrial DNA. Mutations caused by ROS antigens and the resulting macromolecules body as a form of immune response against the antigen. Therefore, in this study is important for genetic variation diketahu shrimp had given of immunostimulant and infection. The results based on ANOVA test showed that amount of total haemocyte count, superoxide anion and protease activity were significantly different (p<0,05). According to the BNT test result on total haemocyte counts showed that 2 ppt is the optimum concentration with average 1.6750 cells/ml. The BNT test result on superoxide anion showed that 2 ppt is the optimum concentration with average absorbance 0,07333. The BNT test result on protease activity showed that 2 ppt is the optimum concentration with average 18,988 units. The results of the fourth test hemaglutinasi protein molecular weight Omp protein bands was found that 42.95 kDa Omp showed the highest titer hemaglutininasi (1 / 32) and for the six test results hemaglutinasi pili protein molecular weight bands was found that 9.08 kDa Omp protein showed the highest titer hemaglutininasi ( 1 / 16). 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