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HOST RESISTANCE

Host plant resistance is defined as “Those characters that enable a plant to avoid, tolerate or recover from attacks of insects under conditions that would cause greater injury to other plants of the same species” (Painter, R.H., 1951).

Rice Sheath Blight (SB) disease although is among the top diseases of rice worldwide but lacks any naturally occurring 100% resistant rice variety. So, the only way to deal with rice SB disease lies in the hands of Integrated Disease Management (IDM) practices or the use of transgenic rice varieties. Conventional breeding isn’t possible due to lack of donor with any durable resistance.

Over the time, a number of rice cultivars have been reported to show partial/moderate resistance against SB disease. The major moderately resistant rice cultivars are listed in Table 1. Wild rice showing moderate resistance to SB disease are listed in Table 2 and transgenic lines developed for SB disease resistance are listed in Table 3.

Moderately resistant variety Origin Reference
Jasmine 85 Southeast Asia Pan et al., 1999
Minghui63 China Han et al., 2002
Yanhui-8888 China Sun et al., 2014
YSBR1 China Zuo et al., 2009
Teqing China Pan et al., 1999
Tetep Vietnam Kush 1977
Pecos United States Sharma et al., 2009

Table 1: Moderately/partially resistant rice cultivars against rice Sheath Blight (SB) disease.



Wild Varieties Reference
O. australiensis, O. grandiglumis Shamim et al., 2014
O. latifolia (DRW 37004), O. punctata (DRW32002), O. rufipogon (DRW 22017-5) Ram et al., 2008
O. nivara (RGC81835, IRGC81941A, CR100008 and CR100111B) Aggarwal et. al., 2019
O. nivara (IRGC104705, IRGC 100898, IRGC104443), O. barthii (IRGC100223), O. meridionalis (IRGC105306), O. officinalis (IRGC105979) O. nivara/O. sativa (IRGC100493) Prasad and Eizenega, 2008
O. rufipogon and O. barthii Kannaiyan and Prasad, 1978

Table 2: Wild rice cultivars showing moderate resistance to rice Sheath Blight (SB) disease.

Original Variety Transgenic Line Method Gene Donor References
Tulsi T0 Agrobacterium mediated chi11 Rice Datta et al., 2000
Swarna SHC4AC2 Biolistic chi11 Rice Baisakh et al., 2001
Pusa Basmati-1 KK-PB-1 Agrobacterium mediated chi11 Rice Kumar et al., 2003
Pusa Basmati-1 T1 Agrobacterium mediated chi11 Rice Sridevi et al., 2003
ADT38 KL-C-ADT38-2 Biolistic tlp and chi11 Rice Kalpana et al., 2006
Pusa Basmati-1 CoT 6 to CoT 23 Agrobacterium mediated chi11 Rice Sripriya et al., 2008
Pusa Basmati-2 Dm-AMP1, Rs-AFP2 Agrobacterium mediated Dm-AMP1 Dahlia merckii Jha et al., 2009
Pusa Basmati-1 T2 line 11 Agrobacterium mediated chi11 and ap24 Rice Rao et al., 2011
Xiushui 11 44244 Agrobacterium mediated OsWRKY30 Rice Peng et al., 2012
Pusa Sugandhi-2 PON-1 Biolistic Osoxo4 Rice Molla et al., 2013
Chaitanya SMN 5-1-10 Agrobacterium mediated BjNPR1 Brassica juncea Sadumpati et al., 2013
Samba Mahsuri CN 12-1-10 Agrobacterium mediated BjNPR1 Brassica juncea Sadumpati et al., 2013
Taipei 30 J6, J61 Agrobacterium mediated RCH10 and AGLU1 Rice and alfalfa Mao et al. 2014
Zonghua 11 OsPGIP1 Agrobacterium mediated OsPGIP1 Rice Wang et al., 2015
Pusa Sugandhi-2 PNN5, PNN9, PNN16 Biolistic AtNPR1 Arabidopsis thaliana Molla et al., 2016
BR-29 T1 Agrobacterium mediated OsOXO4 and OsCHI11 Rice Karmakar et al., 2016
Nippanobare BSR2-OX Agrobacterium mediated OsBSR2 Rice Maeda et al., 2019

Table 3: Transgenic rice varieties for resistance against rice Sheath Blight (SB) disease.

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