We've updated our Privacy Policy to make it clearer how we use your personal data.

We use cookies to provide you with a better experience. You can read our Cookie Policy here.

Advertisement
Disruption of a Rice PPR Protein Causes a Seedling-Specific Albino Phenotype and its Utilization to Enhance Seed Purity in Hybrid Rice Production
News

Disruption of a Rice PPR Protein Causes a Seedling-Specific Albino Phenotype and its Utilization to Enhance Seed Purity in Hybrid Rice Production

Disruption of a Rice PPR Protein Causes a Seedling-Specific Albino Phenotype and its Utilization to Enhance Seed Purity in Hybrid Rice Production
News

Disruption of a Rice PPR Protein Causes a Seedling-Specific Albino Phenotype and its Utilization to Enhance Seed Purity in Hybrid Rice Production

Read time:
 

Want a FREE PDF version of This News Story?

Complete the form below and we will email you a PDF version of "Disruption of a Rice PPR Protein Causes a Seedling-Specific Albino Phenotype and its Utilization to Enhance Seed Purity in Hybrid Rice Production"

First Name*
Last Name*
Email Address*
Country*
Company Type*
Job Function*
Would you like to receive further email communication from Technology Networks?

Technology Networks Ltd. needs the contact information you provide to us to contact you about our products and services. You may unsubscribe from these communications at any time. For information on how to unsubscribe, as well as our privacy practices and commitment to protecting your privacy, check out our Privacy Policy

Abstract
The pentatricopeptide repeat (PPR) gene family represents one of the largest gene families in higher plants. Accumulating data suggest that PPR proteins play a central and broad role in modulating the expression of organellar genes in plants. Here we report a rice mutant named ysa (young seedling albino) derived from the rice thermo/photoperiod sensitive genic male sterile (T/PGMS) line Pei'ai64S, which is a leading male-sterile line for commercial two-line hybrid rice production. The ysa mutant develops albino leaves before the three-leaf stage, but the mutant gradually turns green and recovers to normal green at the six-leaf stage. Further investigation showed that the change in leaf color in ysa mutant is associated with changes in chlorophyll content and chloroplast development. Map-based cloning revealed that YSA encodes a pentatricopeptide repeat protein with sixteen tandem PPR motifs. YSA is highly expressed in young leaves and stems, and its expression level is regulated by light. We showed that the ysa mutation has no apparent negative effects on several important agronomic traits, such as fertility, stigma extrusion rate, selfed seed-setting rate, hybrid seed-setting rate and yield heterosis under normal growth conditions. We further demonstrated that ysa can be used as an early marker for efficient identification and elimination of false hybrids in commercial hybrid rice production, resulting in yield increases by up to ~ 537 kg ha-1.

This article is published online in Plant Physiology Preview and is free to access.

Advertisement