[Plantsci] Please Join Us! Tomorrow SPLS Seminar Dr. Roberto Tuberosa + Abstract

Mon Jan 22 17:35:03 MST 2024

Dear all,
Please find the abstract below:

Circular genomics for cloning genes and QTLs for root system architecture in durum wheat, barley and maize.

Roberto Tuberosa

Department of Agricultural and Food Science (DISTAL), University of Bologna, Italy.

Haplotype variation of genes and QTLs which shape root system architecture (RSA) greatly affects cereal yield, particularly under conditions of abiotic stress, mainly drought. The genetic dissection of RSA traits is increasingly facilitated by remarkable progresses in phenotyping, sequencing and circular genomics approaches (i.e. from phenotype to sequence and vice-versa) to better dissect the QTLome and understand its functions.

In maize, qRoot-yield-1.06, a major QTL associated with RSA traits and yield was recently cloned adopting shovelomics combined with software-assisted root images analysis. A TILLING-transcriptomics approach identified a SOS-like gene encoding for a sodium/H antiporter as the cause of the QTL effect. Notably, native allelic variation at the SOS-like gene impacts RSA also under non-saline conditions.

In durum wheat, a RIL-based and GWAS-based study on root growth angle (RGA) mapped three major QTLs on chr. 2A, 6A and 7A of which qRGA-6A showed the most notable effects on RGA and grain yield as related to the amount of available moisture. A metaQTL analysis in bread wheat evidenced a notable effect of the same region on grain yield. Positional cloning is in progress for qRGA-6A and KASP markers have been designed and are available for marker-assisted selection. The narrow RGA haplotype was relatively frequent in ICARDA cultivars, while the shallow RGA haplotype was associated to the high-yielding Altar C84, a renown CIMMYT founder.

In barley, a collection of TILLING root mutants from the TILLMore collection has allowed for the cloning of ENHANCED GRAVITROPISM 2 (EGT2) which encodes a STERILE ALPHA MOTIVE-containing protein that controls root growth angle in barley and wheat, hence suggesting that EGT2 is an evolutionary conserved regulator of root growth angle in barley and wheat.

Altogether, our results confirm the value of circular genomics and highlight the availability of a wide range of native and mutant haplotypes for RGA in cereals that could be a valuable target for root-based breeding strategies in cereals.

________________________________
From: Shinagawa, Keenia Alejandra Ibarra - (kshinagawa) <kshinagawa at arizona.edu>
Sent: Monday, January 22, 2024 4:29 PM
To: plantsci at list.cals.arizona.edu <plantsci at list.cals.arizona.edu>; plsgs at list.cals.arizona.edu <plsgs at list.cals.arizona.edu>; plsfaculty at list.cals.arizona.edu <plsfaculty at list.cals.arizona.edu>
Subject: Please Join Us! Tomorrow SPLS Seminar Dr. Roberto Tuberosa

Dear all,

We look forward to seeing you tomorrow for Dr. Roberto Tuberosa's seminar “Circular genomics for cloning genes and QTLs for root system architecture in durum wheat, barley and maize”.

Zoom link: https://arizona.zoom.us/j/83044711714 (password: spls23)

[cid:7270929c-c510-483b-8f08-4fd6df2de852]
For further information please see Dr. Tuberosa's bio here: https://www.unibo.it/sitoweb/roberto.tuberosa/cv-en

Thank you kindly,
Keenia Shinagawa

________________________________
From: Plantsci <plantsci-bounces at list.cals.arizona.edu> on behalf of Melandri, Giovanni - (gmelandri) <gmelandri at arizona.edu>
Sent: Thursday, January 18, 2024 9:45 AM
To: plantsci at list.cals.arizona.edu <plantsci at list.cals.arizona.edu>; plsgs at list.cals.arizona.edu <plsgs at list.cals.arizona.edu>; plsfaculty at list.cals.arizona.edu <plsfaculty at list.cals.arizona.edu>
Subject: [Plantsci] SPLS Tuesday's Seminar and one-to-one meetings: Roberto Tuberosa

Dear All,

Please join us on Tuesday Jan-23 for Dr. Roberto Tuberosa's seminar “Circular genomics for cloning genes and QTLs for root system architecture in durum wheat, barley and maize”.
This is the first seminar of the Spring '24 semester of our Tuesday's series.

 The seminar will be on January 23rd  at 4:00 pm in Marley 230 or online: https://arizona.zoom.us/j/83044711714 (password: spls23).

On the same day, you can also meet with Roberto for one-to-one meetings. This is the link to the meeting schedule:
https://docs.google.com/spreadsheets/d/1QDbXn9FD6h686lsXzJR4yH7M_tsx3DjjaAw55L9of2g/edit<https://docs.google.com/spreadsheets/d/1QDbXn9FD6h686lsXzJR4yH7M_tsx3DjjaAw55L9of2g/edit?usp=sharing>

Best,
Giovanni

[The University of Arizona block 'A' logo.]     Giovanni Melandri, Ph.D.
Assistant Professor
School of Plant Sciences - BIO5
THE UNIVERSITY OF ARIZONA
gmelandri at arizona.edu<mailto:gmelandri at arizona.edu> | Cell: 520-427-2092
cals.arizona.edu/spls/home<https://cals.arizona.edu/spls/home>

Keating Bioresearch, Room 307
1657 E Helen St | Tucson, AZ 85719 | PO Box 210240
Office: 520-621-6674

Maricopa Agricultural Center (MAC), Room 173
37860 W Smith Enke Rd | Maricopa, AZ, 85138
[Integrity, Compassion, Exploration, Adaptation, Inclusion, Determination]<https://brand.arizona.edu/signature>
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