Maintained root length density contributes to the waterlogging tolerance in common wheat (Triticum aestivum L.)

Abstract Waterlogging stress substantially reduces the growth and yield of common wheat (Triticum aestivum L.). Limited root development due to decreased availability of oxygen in roots is the major growth-limiting factor for plants under waterlogged conditions. In this study, we have determined whether a maintained root length density can be one of the important traits for waterlogging tolerance to maintain the shoot growth and grain yield, using waterlogging-tolerant and -susceptible wheat cultivars. This study was carried out over five consecutive cropping seasons (from 2006 to 2010), and the wheat plants were exposed to waterlogging from jointing stage to maturity. The waterlogging-tolerant cultivars Nishikazekomugi and Iwainodaichi showed higher relative grain yield and whole grain ratio under waterlogged conditions than the susceptible UNICULM. The waterlogging-tolerant cultivars maintained higher leaf water potential, stomatal conductance and photosynthetic rate under waterlogged conditions than the susceptible one, which was consistent with the higher relative root length density in the tolerant cultivars. These results indicate that maintained root length density is related to maintaining water uptake and the resultant photosynthesis and yield production in common wheat grown under waterlogged conditions.

[1]  A. Oyanagi,et al.  Growth and grain yield of wheat [Triticum aeativum] experimental lines with deep and shallow root system in wet paddy fields , 2004 .

[2]  W. Armstrong,et al.  Formation of Aerenchyma and the Processes of Plant Ventilation in Relation to Soil Flooding and Submergence , 1999 .

[3]  W. Armstrong.  Aeration in Higher Plants , 1980 .

[4]  T. Colmer,et al.  Aerenchyma and an inducible barrier to radial oxygen loss facilitate root aeration in upland, paddy and deep-water rice (Oryza sativa L.). , 2003, Annals of botany.

[5]  R. Q. Cannell,et al.  Effects of waterlogging at different stages of development on the growth and yield of winter oilseed rape (Brassica napus L.) , 1980 .

[6]  Kazuhiko Kimura,et al.  Accurate root length measurement by image analysis , 1999, Plant and Soil.

[7]  Y. Inukai,et al.  Dry matter production in relation to root plastic development, oxygen transport, and water uptake of rice under transient soil moisture stresses , 2010, Plant and Soil.

[8]  H. Kitano,et al.  Root plasticity as the key root trait for adaptation to various intensities of drought stress in rice , 2011, Plant and Soil.

[9]  W. Armstrong.  Radial Oxygen Losses from Intact Rice Roots as Affected by Distance from the Apex, Respiration and Waterlogging , 1971 .

[10]  L. Voesenek,et al.  Flooding tolerance: suites of plant traits in variable environments. , 2009, Functional plant biology : FPB.

[11]  R. Q. Cannell,et al.  Effects of waterlogging and drought on winter wheat and winter barley grown on a clay and sandy loam soil , 1984, Plant and Soil.

[12]  Hans Lambers,et al.  Short‐term waterlogging has long‐term effects on the growth and physiology of wheat , 2002 .

[13]  M. E. Musgrave,et al.  Waterlogging Effects on Yield and Photosynthesis in Eight Winter Wheat Cultivars , 1994 .

[14]  Y. Inukai,et al.  Field evaluation on functional roles of root plastic responses on dry matter production and grain yield of rice under cycles of transient soil moisture stresses using chromosome segment substitution lines , 2012, Plant and Soil.

[15]  A. Oyanagi.  Gravitropic response growth angle and vertical distribution of roots of wheat (Triticum aestivum L.) , 1994, Plant and Soil.

[16]  R. Q. Cannell,et al.  Effects of waterlogging and drought on winter wheat and winter barley grown on a clay and a sandy loam soil , 1984, Plant and Soil.

[17]  Hideki Araki,et al.  Poor grain filling induced by waterlogging is similar to that in abnormal early ripening in wheat in Western Japan , 2011 .

[18]  A. Ismail,et al.  Stomatal Responses in Rainfed Lowland Rice to Partial Soil Drying ; Evidence for Root Signals , 2008 .

[19]  R. Q. Cannell,et al.  Effects of single and multiple waterloggings on the growth and yield of winter wheat on a clay soil , 1985 .

[20]  J. Boyer.  Plant Productivity and Environment , 1982, Science.

[21]  A. Swarup,et al.  Effects of short-term flooding on growth, yield and mineral composition of wheat on sodic soil under field conditions , 1988, Plant and Soil.

[22]  K. Kimura,et al.  Root length and diameter measurement using NIH Image: application of the line-intercept principle for diameter estimation , 2001, Plant and Soil.

[23]  R. K. Belford,et al.  Response of winter wheat to prolonged waterlogging under outdoor conditions , 1981, The Journal of Agricultural Science.

[24]  H. Lambers,et al.  Aerenchyma formation and radial O2 loss along adventitious roots of wheat with only the apical root portion exposed to O2 deficiency , 2003 .

[25]  Y. Mano,et al.  Breeding for flooding tolerant maize using "teosinte" as a germplasm resource , 2007 .

[26]  Akira Yamauchi,et al.  Root biology and genetic improvement for drought avoidance in rice , 2011 .

[27]  Y. Inukai,et al.  Root Development, Water Uptake, and Shoot Dry Matter Production under Water Deficit Conditions in Two CSSLs of Rice: Functional Roles of Root Plasticity , 2011 .

[28]  F. Ponnamperuma.  The Chemistry of Submerged Soils , 1972 .

[29]  Y. Inukai,et al.  Genotypic Variations in Responses of Lateral Root Development to Transient Moisture Stresses in Rice Cultivars , 2008 .

[30]  A. Yamauchi,et al.  Root growth, aerenchyma development, and oxygen transport in rice genotypes subjected to drought and waterlogging , 2008 .

[31]  T. Setter,et al.  Review of prospects for germplasm improvement for waterlogging tolerance in wheat, barley and oats , 2003, Plant and Soil.

[32]  M. Musgrave,et al.  Evaluating Wheat Cultivars for Waterlogging Tolerance , 1998 .

[33]  W. Armstrong,et al.  Phragmites australis– A preliminary study of soil‐oxidizing sites and internal gas transport pathways , 1988 .

[34]  M. Haque,et al.  Aerenchyma Formation in the Seminal Roots of Japanese Wheat Cultivars in Relation to Growth under Waterlogged Conditions , 2012 .

[35]  K. Shiono,et al.  Contrasting dynamics of radial O2-loss barrier induction and aerenchyma formation in rice roots of two lengths. , 2011, Annals of botany.

[36]  Y. Inukai,et al.  Roles of Root Aerenchyma Development and Its Associated QTL in Dry Matter Production under Transient Moisture Stress in Rice , 2013 .

[37]  Hideki Araki,et al.  Waterlogging at jointing and/or after anthesis in wheat induces early leaf senescence and impairs grain filling , 2012 .

[38]  A. Yamauchi,et al.  Root Growth and Water Extraction Response of Doubled-Haploid Rice Lines to Drought and Rewatering during the Vegetative Stage , 2005 .

[39]  D. Singh,et al.  Seed size and adventitious (nodal) roots as factors influencing the tolerance of wheat to waterlogging , 2003 .

[40]  Y. Inukai,et al.  Utilizing Chromosome Segment Substitution Lines (CSSLs) for Evaluation of Root Responses to Transient Moisture Stresses in Rice , 2008 .