Symbiotic Fungi: Principles and Practice (Soil Biology)

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20 Best Production Practice of Arbuscular Mycorrhizal Inoculum 327 b Mycorrhizal effectiveness [MEI] a Colonised host plants [%] 60 40 20 0 100 80 60 40 20 0 C1 C2 C3 C4 AMF multiplication cycles pH 4.5 pH 5.0 pH 5.5 pH 6.0 pH 7.0 pH 8.0 C1 AMF multiplication cycles pH 4.5 pH 5.0 pH 5.5 pH 6.0 pH 7.0 pH 8.0 20.3.4 The Up-Scaling Phase: One Further Step Only C2 Fig. 20.2 Root colonization ability (a) and mycorrhizal effectiveness (b) of AMF populations (Glomus sp. GK12onAnagallis arvensis) with technically modified genotype composition (Selection factor ‘‘soil-pH’’, details see text). Bars: SD As mentioned above, strain or inoculum characteristics are stable minimally one, normally two or — depending on the desired effect — three multiplication cycles. Mass production of AMF means the production of up to several thousands of litres of inoculum containing approximately 80,000 infection units per litre. C3 C4
328 F. Feldmann et al. Inoculum is normally produced in pots of different sizes with one or two, sometimes four host individuals. Without nutrient limitation the growth of the host plants in pots is quite homogeneous due to limited space for root development. Therefore, differences in AMF effectiveness of sub-populations were rarely observed or interpreted as a result of the genetic differences between host individuals. The AMF action and the host growth were found to be different in larger plots without space limitation of root development. We calculate on the following basis: one single plant individuum (here: Zea mays) produces, depending on the substrate type, approximately 400,000–1,600,000 spores in 6 l. How long it will take depends on the quantity of starter inoculum. One should inoculate not less than 1 spore ml 1 and not more than 10 spores ml 1 starter inoculum to the seedling initially. The mass inoculum production should be carried out in greenhouses in ground beds (Fig. 20.3). Up to 50 host individuals are involved in the AMF multiplication in one unit. The ground should be covered with foil, permeable for water but not for soil fauna. The seedlings are planted with a spacing of 50 cm 50 cm. Light, temperature and nutrients should not limit the growth of the host. Select a host variety which is susceptible to mycorrhiza under optimal growing conditions and let the plants grow for up to 5 months in the substrate under optimal conditions. At the end of the inoculum production the host plant has to be dried within less than 2 weeks without removal of green plant parts. Observe the fungus sporulating in this time period. As soon as the spore number not longer varies, the process is over and drying of the inoculum can start. As regards effectiveness, it may be observed that the unlimited root growth of hosts in plots may lead to further segregation of pre-selected strains with high effectiveness into new sub-strains with neutral to high effectiveness during mass production (Fig. 20.4). Nevertheless, more than 90% of the inoculum caused positive growth response in the host (Zea mays) during inoculum mass production. This quota seems to be reproducible and would make it economically feasible to select sub-strains with special effectiveness and to discard eventual sub-populations of lower effectiveness after mass production. Fig. 20.3 Ground-bed plots in the up-scaling phase of inoculum production
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Soil Biology Volume 18 Series Edito
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Ajit Varma l Amit C. Kharkwal Edito
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Foreword So old, so new... More tha
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Foreword vii Little AE, Robinson CJ
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x Preface work in this challenging
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xii Contents 9 Role of Root Exudate
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Contributors L.K. Abbott School of
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Contributors xvii Falko Feldmann Ju
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Contributors xix K. Nara Asian Natu
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Contributors xxi Marc St-Arnaud Ins
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2 A. Das and A. Varma Fig. 1.1 Type
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4 A. Das and A. Varma the scientifi
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6 A. Das and A. Varma 1.3.2 Symbiot
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8 A. Das and A. Varma all the root
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10 A. Das and A. Varma 1. Such poly
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12 A. Das and A. Varma 1.3.3.9 Nitr
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14 A. Das and A. Varma about 1-2 mm
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16 A. Das and A. Varma fixed nitrog
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18 A. Das and A. Varma Mycorrhizae
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20 A. Das and A. Varma Fig. 1.6 Dia
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22 A. Das and A. Varma a b Root hai
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24 A. Das and A. Varma intracellula
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26 A. Das and A. Varma Becker A, Ni
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28 A. Das and A. Varma Trappe JM, B
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30 A. Jumpponen were once active in
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32 A. Jumpponen GA, USA) to avoid d
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34 A. Jumpponen 2.2.3.6 Cloning, Se
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36 A. Jumpponen Table 2.1 Fungi det
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38 A. Jumpponen of the community st
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40 A. Jumpponen Girvan MS, Bullimor
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42 I.A.F. Djuuna et al. 1991). Crop
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44 I.A.F. Djuuna et al. 3.2.2 Indir
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46 I.A.F. Djuuna et al. Mycorrhiza
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48 I.A.F. Djuuna et al. Boomsma CR,
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50 I.A.F. Djuuna et al. Saito M (19
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52 M. Giovannetti et al. evidenced
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54 M. Giovannetti et al. a c e Ster
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56 M. Giovannetti et al. 4.2.4 Rema
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58 M. Giovannetti et al. a b c Fig.
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60 M. Giovannetti et al. to 4.1 mm
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62 M. Giovannetti et al. The detect
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64 M. Giovannetti et al. Jones MD,
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66 A. Gobert and C. Plassard NO3 fl
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68 A. Gobert and C. Plassard After
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70 A. Gobert and C. Plassard with k
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72 A. Gobert and C. Plassard 10 9 2
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74 A. Gobert and C. Plassard Fig. 5
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76 A. Gobert and C. Plassard connec
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78 A. Gobert and C. Plassard any ti
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80 A. Gobert and C. Plassard Net fl
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82 A. Gobert and C. Plassard a Rati
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84 A. Gobert and C. Plassard - upta
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86 A. Gobert and C. Plassard Table
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88 A. Gobert and C. Plassard Newman
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90 I.M. van Aarle as mycorrhizal hy
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92 I.M. van Aarle a wash buffer. Th
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94 I.M. van Aarle l Usually 20-50 m
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96 I.M. van Aarle Fig. 6.1 Extramat
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98 I.M. van Aarle A disadvantage of
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Chapter 7 In Vitro Compartmented Sy
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7 In Vitro Compartmented Systems to
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Chapter 8 Use of the Autofluorescen
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8 Use of the Autofluorescence Prope
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Chapter 9 Role of Root Exudates and
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9 Role of Root Exudates and Rhizosp
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Chapter 10 Assessing the Mycorrhiza
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10 Assessing the Mycorrhizal Divers
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178 D. Krüger et al. 8. Wash the p
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180 D. Krüger et al. Table 10.1 Ty
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182 D. Krüger et al. appear are in
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184 D. Krüger et al. tool such as
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186 D. Krüger et al. Ishikawa J, T
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188 D. Krüger et al. Sammeth M, Ro
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190 Z.M. Solaiman hyphae have been
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192 Z.M. Solaiman 11.2.2 Isolation
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194 Z.M. Solaiman 11.3 Conclusions
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Chapter 12 Interaction with Soil Mi
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12 Interaction with Soil Microorgan
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Chapter 13 Isolation, Cultivation a
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13 Isolation, Cultivation and In Pl
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228 K. Vogel-Mikusˇ et al. only be
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230 K. Vogel-Mikusˇ et al. Fig. 14
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232 K. Vogel-Mikusˇ et al. such sp
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234 K. Vogel-Mikusˇ et al. STIM de
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236 K. Vogel-Mikusˇ et al. transfe
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Table 14.1 Element concentrations w
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240 K. Vogel-Mikusˇ et al. Fig. 14
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242 K. Vogel-Mikusˇ et al. Frey B,
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244 E. Dumas-Gaudot et al. TEMED N,
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246 E. Dumas-Gaudot et al. system i
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248 E. Dumas-Gaudot et al. Bromophe
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250 E. Dumas-Gaudot et al. taken to
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252 E. Dumas-Gaudot et al. Note 6:
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254 E. Dumas-Gaudot et al. by Bradf
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256 E. Dumas-Gaudot et al. 3. Take
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258 E. Dumas-Gaudot et al. solubili
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260 E. Dumas-Gaudot et al. Table 15
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262 E. Dumas-Gaudot et al. Table 15
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264 E. Dumas-Gaudot et al. Followin
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266 E. Dumas-Gaudot et al. Once hom
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268 E. Dumas-Gaudot et al. to both
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270 E. Dumas-Gaudot et al. were the
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272 E. Dumas-Gaudot et al. Dumas-Ga
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378 A. Baldi et al. 23.4 Analysis F
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380 A. Baldi et al. Chattopadhyay S
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382 A. Sirrenberg et al. physical c
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384 A. Sirrenberg et al. Fig. 24.1
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390 A. Sirrenberg et al. in Fig. 24
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392 A. Sirrenberg et al. 24.5.2 Tru
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394 K. Haselwandter and G. Winkelma
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404 E. Mohammadi Goltapeh et al. Fi
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408 E. Mohammadi Goltapeh et al. 26
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410 E. Mohammadi Goltapeh et al. co
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412 E. Mohammadi Goltapeh et al. Tw
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414 E. Mohammadi Goltapeh et al. Co
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416 E. Mohammadi Goltapeh et al. qu
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418 E. Mohammadi Goltapeh et al. 26
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420 E. Mohammadi Goltapeh et al. Ch
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Index A A. bisporus var. burnettii,
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Index 425 Dark septate root endophy
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Index 427 Leghemoglobin, 11 Lentinu
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Index 429 Proteomics, 244 Protoplas
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Symbiotic Fungi: Principles and Practice (Soil Biology)

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