THỨ TƯ,NGÀY 22 THÁNG 4, 2020

The huge aftereffect of this QTL will make it employed for breeding wheat cultivars having adequate resistance to stripe corrosion

Bởi Nguyễn Hoàng Phong

Cập nhật: 04/07/2022, 06:16

The huge aftereffect of this QTL will make it employed for breeding wheat cultivars having adequate resistance to stripe corrosion

A keen RIL acquiring the Zavitan allele on the QTL that have three even more beneficial alleles out-of Svevo is ranked the 3rd most resistant RIL round the the surroundings (indicate It 2

Both QYrsv.swust-1BL.step one and you will QYrsv.swust-1BL.dos was mapped into long-arm of chromosome 1B and you will continuously of the Apr to stripe corrosion inside several surroundings. QYrsv.swust-1BL.step one are the largest impression QTL you to definitely said 11.0 so you’re able to 34.4% of your own phenotypic adaptation for it and you will DS, correspondingly, all over the environment when you look at the Asia and you can Israel. QYrsv.swust-1BL.1 try receive between markers IWB5732 and you will IWB4839 in the region off 661,593,905 so you’re able to 663,334,619 bp of one’s durum wheat Svevo RefSeq Rel. step one.0, add up to brand new 670,171,058- to 670,998,484-bp section of the CS 1BL chromosome. QYrsv.swust-1BL.dos was receive between indicators IWB11625 and you may IWA3497 from the 556,239,805- to help you 556,896,247-bp side of the durum genome, comparable to the new 638,931,988- to help you 640,158,195-bp region of the CS 1BL chromosome. Up to now, more 20 QTL or family genes for stripe corrosion resistance has actually already been said toward chromosome 1BL using biparental populations and GWAS analysis (Second Table S3). New bodily period out-of QYrsv.swust-1BL.step 1 overlapped with Yr29 (William mais aussi al. 2003), QYr.ucw-1BL (Cobo et al. 2018), and you will QYr.saas-1B (Yang et al. 2019). Cobo et al. (2019) mapped QYr.ucw-1BL contained in this a great 0.24-cM part (332 kb from the CS genome) on chromosome sleeve 1BL. The fresh bodily area try 669 so you can 670 Mb from the CS genome. This particular area overlaps towards the venue of Apr gene Yr29 for the new distal area for chromosome case 1BL ranging from easy-series repeat (SSR) ). These indicators explain a local out-of 22.eight Mb (between 662.dos and you can 684.9 Mb about CS genome). Due to no recombination ranging from QYr.ucw-1BL and you will Yr29 within the an allelism make sure similar levels of opposition, Cobo et al. datingranking.net/local-hookup/owen-sound (2019) recommended you to definitely QYr.ucw-1BL and Yr29 may be the exact same gene. The latest cleaved amplified polymorphic series marker cslv46G22 related to Yr29 (Elizabeth. Lagudah, private communication) are at new -Mb status about CS genome, that is during the QYrsv.swust-1BL.1 physical period. This marker can be acquired in the Svevo. Yr29 is actually a lasting pleiotropic gene (Yr29/Lr46/Sr58/Pm39/Ltn2) for effectiveness multiple ailment and you can leaf suggestion necrosis and also become said a number of hexaploid and you can durum wheat genotypes and you can relevant having necrotic leaf info (Herrera-Foessel ainsi que al. 2011; Kolmer 2015; Lan et al. 2015, 2019; H. Y. Li ainsi que al. 2020; Ponce-Molina et al. 2018). Yet not, Svevo will not tell you leaf idea necrosis. QYr.saas-1B was known in common grain genotype CH55 for the 1RS/1BL translocation, detailing six.twenty-four so you can % of stripe rust phenotypic type throughout tested environment (Yang mais aussi al. 2019). It was truly receive anywhere between and Mbp from the CS genome, in addition to overlapping that have Yr29. Yang et al. (2019) determined that Qyr.saas-1B is probably Yr29. A lot more tasks are wanted to see whether QYrsv.swust-1BL.step one, Yr29, and you will Qyr.saas-1B are identical, allelic, or closely connected.

With regards to the source of opposition as well as the molecular markers linked for the related QTL loci, the fresh QTL understood in the current data are unrealistic to-be the in past times advertised QTL

QYrzv.swust-2AS flanked by the IWB7877 and you may IWB72720 comes from Zavitan. It said 8.7 so you’re able to nine.3% of your own phenotypic adaptation inside about three Israeli environment. It was and significant regarding the Found studies but with an excellent reduced LOD because of the ingredient–environment feeling (LOD_AbyE). 9). The QYrzv.swust-2AS region represents the fresh CS actual chart area anywhere between 5,246,322 and you can 5,329,931 bp. Around three forever named stripe corrosion resistance genes-Yr17 (Helguera mais aussi al. 2003), Yr56 (Bansal ainsi que al. 2014), and Yr69 (Hou ainsi que al. 2016)-was mapped to help you 2AS. While the Yr17 and Yr69 confer ASR, none of them genes might be just like QYrzv.swust-2AS of small-perception Apr. Yr56 is actually an apr gene mapped between markers Xsun167 and you will Xsun168 in Australian durum grain diversity Wollaroi (Bansal et al. 2014; McIntosh et al. 2013). At this point, at the least 20 stripe corrosion opposition QTL was indeed claimed on chromosome 2AS, and more than of these can be found in the distal prevent off 2AS (Second Desk S3).

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